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)`
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)`
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.
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
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
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
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
Description : A long wire carrying 100 amp is placed in an external magnetic field of 50 gauss. The wire is at right angles to the field.
Last Answer : The field is null above the wire and crowded below
Description : One method of testing for a reversed shunt field coil in a DC generator or motor is by connecting the field to a direct current source, at reduced field rated voltage, and test for ... placed near each field C. test lamp across adjacent fields D. copper jumper across the interpole connections
Last Answer : Answer: B
Description : A wire of length `L metre ` , carrying a current `I `ampere is bent in the form of a circle . The magnitude of its magnetic moment is …………. ` MKS unit
Last Answer : A wire of length `L metre ` , carrying a current `I `ampere is bent in the form of a circle . The magnitude of ... `(L^(2)I)/(4pi)` D. `(LI)/(4pi)`
Description : A wire of length 2 m carrying a current of 1 A is bend to form a circle. The magnetic moment of the coil is (in `A-m^(2)`)
Last Answer : A wire of length 2 m carrying a current of 1 A is bend to form a circle. The magnetic moment of the coil is (in `A ... . `pi//2` C. `pi//4` D. `1//pi`
Description : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current of 1 A. The resistivity of copper `=1.7xx10^(-8)
Last Answer : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current ... of copper `=1.7xx10^(-8) Omega`m.
Description : How many times has the earth magnetic field reversed itself?
Last Answer : Need answer
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.
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.
Description : 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
Last 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 ... depends on (i) direction of current through the conductor, and (ii) direction of magnetic field.
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.
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.
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.
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?
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
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`
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.
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
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`
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`
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
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
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.
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
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
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
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
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
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
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
Description : 1. Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop. -Physics-10
Last Answer : Solution: For the downward direction of the current, the direction of the magnetic field will be as if emerging from the table outside the loop and merging with the table inside the loop. Similarly, ... the table outside the loop and merging with the table inside the loop, as shown in the figure.
Description : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at the centre of this loop is `B`.
Last Answer : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at ... B. `4B` C. `B/4` D. `16B`
Description : A solenoid has length `0.4cm`, radius 1 cm and 400 turns of wire. If a current fo 5 A is passed through this solenoid, then what is the magnetic field
Last Answer : A solenoid has length `0.4cm`, radius 1 cm and 400 turns of wire. If a current fo 5 A is passed through this ... `6.28xx10^(-7)T` D. `6.28xx10^(-6)T`
Description : A long straight wire along the `z`- axis carries a current ` I` in the negative ` z- direction` . The magnetic vector field ` vec(B)` at a point havin
Last Answer : A long straight wire along the `z`- axis carries a current ` I` in the negative ` z- direction` . The magnetic ... -yhat(j)))/(2pi(x^(2)+y^(2)))`
Description : A current of `10` ampere is flowing in a wire of length `1.5m`. A force of `15 N` acts on it when it is placed in a uniform magnetic field of `2` tesl
Last Answer : A current of `10` ampere is flowing in a wire of length `1.5m`. A force of `15 N` acts on it when it is placed ... `45^(@)` C. `60^(@)` D. `90^(@)`
Description : Magnetic field produced at the point O due to current flowing in an infinite wire shaped as shown in the figure is
Last Answer : Magnetic field produced at the point O due to current flowing in an infinite wire shaped as shown in the figure is ... (0)I)/(4R)+(mu_(0)I)/(4piR)`
Description : Current `i` is carried in a wire of length `L`. If the wire is turned into a circular coil, the maximum magnitude of torque in a given magnetic field
Last Answer : Current `i` is carried in a wire of length `L`. If the wire is turned into a circular coil, the maximum magnitude ... iB)/(4pi)` D. `(L^(2)B)/(4pi)`
Description : When a wire with a current is placed in a magnetic field....?
Last Answer : Feel Free to Answer
Description : An infinitely long wire carries a current of three amps. The magnetic field outside the wire: w) points radially away from the wire x) points radially inward y) circles the wire z) is zero.
Last Answer : ANSWER: Y -- CIRCLES THE WIRE
Description : Which of the listed conditions will occur if the polarity of the field poles and the direction of current to the brushes of a DC motor were both reversed? A. The motor would not start. ... direction of rotation of the armature would be unchanged. D. The field pole windings would become overheated.
Last Answer : Answer: C
Description : Which of the following statements describes what will happen when both the polarity of the field poles, and the direction of current to the brushes of a DC motor are reversed? A. The motor will ... of rotation of the armature will remain the same. D. The field pole windings will become overheated.
Description : A wire carrying current `I` has the shape as shown in the adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semici
Last Answer : A wire carrying current `I` has the shape as shown in the adjoining figure. Linear parts of the wire are very ... `B=(mu_(0))/(4pi)I/R(pihati-2hatk)`
Description : A square current carrying loop abcd is palced near an infinitely long another current carrying wire ef. Now, match the following two columns.
Last Answer : A square current carrying loop abcd is palced near an infinitely long another current carrying wire ef. Now, match the following two columns.
Description : A non - popular loop of conducting wire carrying a current `I` is placed as shown in the figure . Each of the straighrt sections of the loop is of the
Last Answer : A non - popular loop of conducting wire carrying a current `I` is placed as shown in the figure . Each of the ... `(1)/(sqrt(2))(hat(i)+hat(k))`