Why and when does a current carrying conductor kept in a magnetic field experience force? List the factors on which direction of this force depends? -Science

Why and when does a current carrying conductor kept in a magnetic field experience force? List the factors on which direction of this force depends? -Science
by

1 Answer

Answer :

The drifting of free electrons of a conductor in a definite direction causes the current to flow through it. When such conductor is placed in a uniform magnetic field, each drifted electron of a conductor experience a magnetic force. This force is collectively experience by a conductor as a whole. Hence a current carrying conductor kept in a magnetic field experience a force. The direction of magnetic force depends on (i) direction of current through the conductor, and (ii) direction of magnetic field.
by

Related questions

(a) Describe activity with labelled diagram to show that a current carrying conductor experience a force in a magnetic field. (b) State the rule to determine the direction of force. -Science

Description : (a) Describe activity with labelled diagram to show that a current carrying conductor experience a force in a magnetic field. (b) State the rule to determine the direction of force. -Science

Last Answer : (a) Without using a magnet, magnetic field can be produced by flowing the current through a straight conductor or a solenoid. Aim : To show that magnetic field exerts a force on a current carrying ... current, then the thumb will point in the direction of motion or the force acting on the conductor.

Basic electrical motor action depends on _______________. A. a conductor rotated within a magnetic field B. a current carrying conductor placed in a magnetic field C. the relative force of the commutator and commutating poles D. the relative force of the armature and interpoles

Description : Basic electrical motor action depends on _______________. A. a conductor rotated within a magnetic field B. a current carrying conductor placed in a magnetic field C. the relative force of the commutator and commutating poles D. the relative force of the armature and interpoles

Last Answer : Answer: B

Fleming's left hand rule is used to find (a) direction of magnetic field due to current carrying conductor (b) direction of flux in a solenoid (c) direction of force on a current carrying conductor in a magnetic field (d) polarity of a magnetic pole

Description : Fleming's left hand rule is used to find (a) direction of magnetic field due to current carrying conductor (b) direction of flux in a solenoid (c) direction of force on a current carrying conductor in a magnetic field (d) polarity of a magnetic pole

Last Answer : (c) direction of force on a current carrying conductor in a magnetic field

With the help of a diagram of experimental setup describe an activity to show that the force acting on a current carrying conductor placed in a magnetic field increases with increase in field strength. -Science

Description : With the help of a diagram of experimental setup describe an activity to show that the force acting on a current carrying conductor placed in a magnetic field increases with increase in field strength. -Science

Last Answer : Magnetic Effects of Electric Current Chapter Wise Important Questions Class 10 Science October 1, 2019 by Bhagya Important Question for Class 10 Science Magnetic Effects of Electric Current PDF ... a current carrying conductor placed in a magnetic field increases with increase in field strength.

For what position of a current carrying conductor placed in a magnetic field, the maximum force acts on it? -Science

Description : For what position of a current carrying conductor placed in a magnetic field, the maximum force acts on it? -Science

Last Answer : To obtain the maximum force acting on the current carrying conductor placed in a magnetic field, the conductor should be placed perpendicular to the magnetic field, i.e. the direction of current should be at right angle to the direction of the magnetic field.

9. When is the force experienced by a current–carrying conductor placed in a magnetic field largest? -Physics-10

Description : 9. When is the force experienced by a current–carrying conductor placed in a magnetic field largest? -Physics-10

Last Answer : When the direction of the current is perpendicular to the direction of the magnetic field is when the force experienced is the largest.

State the expression for the magnetic force on straight current carrying conductor placed in uniform magnetic field

Description : State the expression for the magnetic force on straight current carrying conductor placed in uniform magnetic field

Last Answer : State the expression for the magnetic force on straight current carrying conductor placed in uniform magnetic field

A current of 5.8 A flows through a 0.25 m long straight conductor which is kept perpendicular in a region of uniform magnetic field of 3.7 T . The force on conductor is a) 5.4 N b) 2.4 N c) 3.4 N d) 6.4 N

Description : A current of 5.8 A flows through a 0.25 m long straight conductor which is kept perpendicular in a region of uniform magnetic field of 3.7 T . The force on conductor is a) 5.4 N b) 2.4 N c) 3.4 N d) 6.4 N

Last Answer : a) 5.4 N

The amount of mechanical force or torque produced by an electric motor depends on the ________________. A. strength of its magnetic field B. amount of armature current flow C. length of conductor in the field D. all of the above

Description : The amount of mechanical force or torque produced by an electric motor depends on the ________________. A. strength of its magnetic field B. amount of armature current flow C. length of conductor in the field D. all of the above

Last Answer : Answer: D

In the left hand rule, forefinger always represents (a) voltage (b) current (c) magnetic field (d) direction of force on the conductor

Description : In the left hand rule, forefinger always represents (a) voltage (b) current (c) magnetic field (d) direction of force on the conductor

Last Answer : (c) magnetic field

The left hand rule correlates to (a) current, induced e.m.f. and direction of force on a conductor (b) magnetic field, electric field and direction of force on a conductor (c) self induction, mutual induction and direction of force on a conductor (d) current, magnetic field and direction of force on a conductor

Description : The left hand rule correlates to (a) current, induced e.m.f. and direction of force on a conductor (b) magnetic field, electric field and direction of force on a conductor (c) self induction, ... and direction of force on a conductor (d) current, magnetic field and direction of force on a conductor

Last Answer : (d) current, magnetic field and direction of force on a conductor

Find the Lorentz force due to a conductor of length 2m carrying a current of 1.5A and magnetic flux density of 12 units. a) 24 b) 36 c) 32 d) 45

Description : Find the Lorentz force due to a conductor of length 2m carrying a current of 1.5A and magnetic flux density of 12 units. a) 24 b) 36 c) 32 d) 45

Last Answer : c) 32

What is the effect of external magnetic field on current carrying conductor?

Description : What is the effect of external magnetic field on current carrying conductor?

Last Answer : What is the effect of external magnetic field on current carrying conductor?

A current carrying conductor is associated with – (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field

Description : A current carrying conductor is associated with – (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field

Last Answer : (3) an electro-magnetic field Explanation: A current carrying conductor, such as a metal wire, will produce a magnetic field around it because of the motion of charge within the wire itself. This motion produces or sets up a magnetic field around the wire in the form of concentric circles.

A current carrying conductor is associated with (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field

Description : A current carrying conductor is associated with (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field

Last Answer : an electro-magnetic field

The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Description : The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Last Answer : ANSWER: Z -- CIRCLES AROUND THE WIRE

A current flows in a conductor from east to west. The direction of the magnetic field at a points above the conductor is

Description : A current flows in a conductor from east to west. The direction of the magnetic field at a points above the conductor is

Last Answer : A current flows in a conductor from east to west. The direction of the magnetic field at a points ... . towards south C. towards east D. towards west

The thickness of the layer of insulation on the conductor, in cables, depends upon (a) Reactive power (b) Power factor (c) Voltage (d) Current carrying capacity

Description : The thickness of the layer of insulation on the conductor, in cables, depends upon (a) Reactive power (b) Power factor (c) Voltage (d) Current carrying capacity

Last Answer : (c) Voltage

A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be (a) zero (b) BLI (c) B2LI (d) BLI2

Description : A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be (a) zero (b) BLI (c) B2LI (d) BLI2

Last Answer : (a) zero

A square coil of edge I having n turns carries a curent i. it is kept on a smooth horizontal plate. A uniform magnetic field B exists in a direction p

Description : A square coil of edge I having n turns carries a curent i. it is kept on a smooth horizontal plate. A uniform magnetic field B exists in a direction p

Last Answer : A square coil of edge I having n turns carries a curent i. it is kept on a smooth horizontal plate. A uniform ... . `(Mg)/(4niL)` D. `(2Mg)/(niL)`

The force between two long parallel wires A and B carrying current is `0.004 Nm^(-1)`. The conductors are 0.01 m apart. If the current in conductor A

Description : The force between two long parallel wires A and B carrying current is `0.004 Nm^(-1)`. The conductors are 0.01 m apart. If the current in conductor A

Last Answer : The force between two long parallel wires A and B carrying current is `0.004 Nm^(-1)`. The conductors are 0.01 m ... . `50 A ` C. `10 A` D. `100 A`

Find the height of an infinitely long conductor from point P which is carrying current of 6.28A and field intensity is 0.5 units. a) 0.5 b) 2 c) 6.28 d) 1

Description : Find the height of an infinitely long conductor from point P which is carrying current of 6.28A and field intensity is 0.5 units. a) 0.5 b) 2 c) 6.28 d) 1

Last Answer : b) 2

Two parallel conductors are separated by a distance, d carrying a current, I in the same direction. The magnetic

Description : Two parallel conductors are separated by a distance, d carrying a current, I in the same direction. The magnetic field along a line running parallel to the conductors and midway between them is (A) zero (B) proportional to I (C) proportional to d (D) proportional to the permeability of the medium. 

Last Answer : The  magnetic  field  along  the conductor at  the  midway point  is  zero  because  equal  magnitide  of  field  are produced  in  each conductor   therefore  the  resultant  magnetic field  at  the  midway  is  zero.

What is the device, which depends on the action of a movalbe permanent magnet, in aligning itself in the resultant field produced by a fixed permanent magnet or current- carrying coils whose axes are displaced by a fixed angle?

Description : What is the device, which depends on the action of a movalbe permanent magnet, in aligning itself in the resultant field produced by a fixed permanent magnet or current- carrying coils whose axes are displaced by a fixed angle?

Last Answer : moving-magnet instrument

A magnetic needle is kept in a non-uniform management field. It experiences (a) A force and a torque (b) A force but not a torque (c) A torque but not a force (d) Neither a force nor a torque

Description : A magnetic needle is kept in a non-uniform management field. It experiences (a) A force and a torque (b) A force but not a torque (c) A torque but not a force (d) Neither a force nor a torque

Last Answer : Ans:(a)

Assertion At the centre of a circular current carrying loop `(I_(1))`, there is an infinitely long straight of the circle. Then magnetic force of attr

Description : Assertion At the centre of a circular current carrying loop `(I_(1))`, there is an infinitely long straight of the circle. Then magnetic force of attr

Last Answer : Assertion At the centre of a circular current carrying loop `(I_(1))`, there is an infinitely long ... at centre is inwards, parallel to `I_(2)`.

Assertion three infinitely long current carrying wires have equal currents and they are equally spaced. The magnitude of magnetic force on all three i

Description : Assertion three infinitely long current carrying wires have equal currents and they are equally spaced. The magnitude of magnetic force on all three i

Last Answer : Assertion three infinitely long current carrying wires have equal currents and they are equally spaced. The ... Reason Net force on wire-2 is zero.

The magnetic field inside a long straight solenoid-carrying current -Physics-10

Description : The magnetic field inside a long straight solenoid-carrying current -Physics-10

Last Answer : d. is the same at all points The magnetic field inside a long straight current carrying solenoid is uniform therefore it is the same at all points.

A long straight wire is carrying a current of 12 A . The magnetic field at a distance of 8 cm is `(mu_(0) =4pi xx 10^(-7) N A ^(2))`

Description : A long straight wire is carrying a current of 12 A . The magnetic field at a distance of 8 cm is `(mu_(0) =4pi xx 10^(-7) N A ^(2))`

Last Answer : A long straight wire is carrying a current of 12 A . The magnetic field at a distance of 8 cm is `(mu_(0) =4pi xx ... /m^(2)` D. `4xx10^(-5)Wb//m^(2)`

The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4cm from the centre is `54muT`. What

Description : The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4cm from the centre is `54muT`. What

Last Answer : The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of ... T` C. `125 mu T` D. `75 mu T`

A long conducting wire carrying a current I is bent at `120^(@) `( see figure). The magnetic field B at a point P on the right bisector of bending ang

Description : A long conducting wire carrying a current I is bent at `120^(@) `( see figure). The magnetic field B at a point P on the right bisector of bending ang

Last Answer : A long conducting wire carrying a current I is bent at `120^(@) `( see figure). The magnetic field B at a ... (3pid))` D. `(sqrt(3mu_(0)I))/(2pid)`

Assertion Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) is zero. Reasonl Magnetic moment (M) is inward

Description : Assertion Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) is zero. Reasonl Magnetic moment (M) is inward

Last Answer : Assertion Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) ... . Reasonl Magnetic moment (M) is inwards.

Assertion A flexeble wire loop of irregular shape carrying current when placed in a uniform external magnetic field acquires a circular shape. Reason

Description : Assertion A flexeble wire loop of irregular shape carrying current when placed in a uniform external magnetic field acquires a circular shape. Reason

Last Answer : Assertion A flexeble wire loop of irregular shape carrying current when placed in a uniform external ... circular shape is having the greatert area.

A circular flexible loop of wire of radius r carrying a current I is placed in a uniform magnetic field B . If B is doubled, then tension in the loop

Description : A circular flexible loop of wire of radius r carrying a current I is placed in a uniform magnetic field B . If B is doubled, then tension in the loop

Last Answer : A circular flexible loop of wire of radius r carrying a current I is placed in a uniform magnetic field ... is doubled C. is halved D. becomes 4 times

A wires PQRS carrying a current I runs along three edges of a cube of side l as shown in figure. There exists a uniform magnetic field of magnitude B

Description : A wires PQRS carrying a current I runs along three edges of a cube of side l as shown in figure. There exists a uniform magnetic field of magnitude B

Last Answer : A wires PQRS carrying a current I runs along three edges of a cube of side l as shown in figure. There exists ... sqrt(3)IB` C. `sqrt(2I) lB` D. 2Ilb

The magnetic field existing in a region is gicen by `vecB =B_0(1+(x)/(l))vec k.` A square loop of edge l and carrying a current I, is placed with its

Description : The magnetic field existing in a region is gicen by `vecB =B_0(1+(x)/(l))vec k.` A square loop of edge l and carrying a current I, is placed with its

Last Answer : The magnetic field existing in a region is gicen by `vecB =B_0(1+(x)/(l))vec k.` A square loop of edge l and ... ` B. zero C. `B_(0)Il` D. `4B_(0)Il`

The magnetic field at the centre of a circular coil of radius `r` carrying current `l` is `B_(1)`. The field at the centre of another coil of radius `

Description : The magnetic field at the centre of a circular coil of radius `r` carrying current `l` is `B_(1)`. The field at the centre of another coil of radius `

Last Answer : The magnetic field at the centre of a circular coil of radius `r` carrying current `l` is `B_(1)`. The field at the ... `1//2` B. `1` C. `2` D. `4`

A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon

Description : A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon

Last Answer : A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not ... turns in the loop D. strength of the current

The strength of the magnetic field at a point `r` near a long straight current carrying wire is `B`. The field at a distance `r/2` will be

Description : The strength of the magnetic field at a point `r` near a long straight current carrying wire is `B`. The field at a distance `r/2` will be

Last Answer : The strength of the magnetic field at a point `r` near a long straight current carrying wire is `B`. The field at a ... . `B/2` B. `B/4` C. 2B D. 4B

A conducting loop carrying a current `I` is placed in a uniform magnetic field ponting into the plane of the paper as shown. The loop will have a tend

Description : A conducting loop carrying a current `I` is placed in a uniform magnetic field ponting into the plane of the paper as shown. The loop will have a tend

Last Answer : A conducting loop carrying a current `I` is placed in a uniform magnetic field ponting into the plane of the ... +ve X-axis D. move towards -ve X-axis

What happens to a current-carrying wire in a magnetic field if the current is reversed?

Description : What happens to a current-carrying wire in a magnetic field if the current is reversed?

Last Answer : In that case, the magnetic field caused by the current would also be reversed. As for the wire itself, it would feel a force in the opposite direction, due to the interaction of the magnetic fields.

Find the magnetic field intensity at the centre O of a square of the sides equal to 5m and carrying 10A of current. a) 1.2 b) 1 c) 1.6 d) 1.8

Description : Find the magnetic field intensity at the centre O of a square of the sides equal to 5m and carrying 10A of current. a) 1.2 b) 1 c) 1.6 d) 1.8

Last Answer : d) 1.8

When a uniform magnetic field B is applied to a current carrying coil, the coil will rotate in such a manner that its plane a) becomes parallel to B b) becomes anti-parallel to B c) makes an angle of 600 with B d) becomes perpendicular to B

Description : When a uniform magnetic field B is applied to a current carrying coil, the coil will rotate in such a manner that its plane a) becomes parallel to B b) becomes anti-parallel to B c) makes an angle of 600 with B d) becomes perpendicular to B

Last Answer : d) becomes perpendicular to B

The shape of a magnetic field around a long straight current carrying wire is: w) elliptical. x) square y) varies depending on the magnitude of the current z) circular

Description : The shape of a magnetic field around a long straight current carrying wire is: w) elliptical. x) square y) varies depending on the magnitude of the current z) circular

Last Answer : ANSWER: Z -- CIRCULAR

The magnetic field intensity at the centre of a current carrying coil of diameter J m is K. The current flowing

Description : The magnetic field intensity at the centre of a current carrying coil of diameter J m is K. The current flowing in the coil is

Last Answer : The magnetic field intensity at the centre of a current carrying coil of diameter d m is H. The current flowing in the coil is dH

The magnetic field on the axis of a current carrying polygonal coil will have only a horizontal component

Description : The magnetic field on the axis of a current carrying polygonal coil will have only a horizontal component parallel to the Plane of the coil 

Last Answer : The magnetic field on the axis of a current carrying polygonal coil will have only a horizontal component parallel to the Plane of the coil it is never possible

Force on a moving charge in a uniform magnetic field depends uponA. magnetic flux density B. the charge on the particle C. the speed of particle D. all of above

Description : Force on a moving charge in a uniform magnetic field depends uponA. magnetic flux density B. the charge on the particle C. the speed of particle D. all of above

Last Answer : all of above

Tightly knit metal braid wire can be used with a printed circuit board when ___________. A. conductor flexibility is required B. desoldering components in the circuit C. electrically produced magnetic fluxes would cause inaccuracies in adjacent components D. reactance in the circuit must be kept to a minimum

Description : Tightly knit metal braid wire can be used with a printed circuit board when ___________. A. conductor flexibility is required B. desoldering components in the circuit C. electrically produced magnetic ... cause inaccuracies in adjacent components D. reactance in the circuit must be kept to a minimum

Last Answer : Answer: B

The torque of a conductor is defined only in the case when a) The field is perpendicular to the loop b) The plane of the loop is parallel to the field c) The plane of the loop is perpendicular to the current direction d) The field and the current direction are same

Description : The torque of a conductor is defined only in the case when a) The field is perpendicular to the loop b) The plane of the loop is parallel to the field c) The plane of the loop is perpendicular to the current direction d) The field and the current direction are same

Last Answer : b) The plane of the loop is parallel to the field

10. Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field? -Science

Description : 10. Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field? -Science

Last Answer : The direction of the magnetic field can be determined using the Fleming’s Left hand rule. The direction of the magnetic field will be perpendicular to the direction of current and the direction ... it can be concluded that the direction of the magnetic field inside the chamber is downward.