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 : A circular current carrying coil has a radius R. The distance from the centre of the coil on the axis where the magnetic induction will be `(1//8)^(th
Last Answer : A circular current carrying coil has a radius R. The distance from the centre of the coil on the axis where the ... 2//sqrt(3))R` D. `R//2sqrt(3)`
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 : 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 : 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 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 : 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)`
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 : A circular loop of mass m and radius r in X-Y plane of a horizontal table as shown in figure. A uniform magnetic field B is applied parallel to X-axis
Last Answer : A circular loop of mass m and radius r in X-Y plane of a horizontal table as shown in figure. A uniform ... . `(mg)/(2pirB)` D. `(pirB)/(mgl)`
Description : An ELECTRON moving horizontally along the +x axis enters a region of space with a horizontal uniform magnetic field pointing in the +y direction. The electron will be deflected: w) -y direction x) +y direction y) -z direction z) +z direction
Last Answer : ANSWER: Y -- -Z DIRECTION
Description : The magneitc field produced at the center of a current carrying circular coil of radius r, is
Last Answer : The magneitc field produced at the center of a current carrying circular coil of radius r, is A. directly ... 2)` D. inversely proportional to `r^(2)`
Description : In a cantilever carrying a uniformly varying load starting from zero at the free end, the Bending moment diagram is (a) A horizontal line parallel to x-axis (b) A line inclined to x-axis (c) Follows a parabolic law (d) Follows a cubic law
Last Answer : (d) Follows a cubic law
Description : In a cantilever carrying a uniformly varying load starting from zero at the free end, the shear force diagram is (a) A horizontal line parallel to x-axis (b) A line inclined to x-axis (c) Follows a parabolic law (d) Follows a cubic law
Last Answer : (c) Follows a parabolic law
Description : The rectangular coil of area A is in a field B. Find the torque about the Z-axis when the coil lies in the position shown and carries a current I.
Last Answer : The rectangular coil of area A is in a field B. Find the torque about the Z-axis when the coil ... 2IAM in positive Z-axis D. 2IAB in negative Z-axis
Description : A current of 2 A is made to flow through a coil which has only one turn. The magnetic field produced at the centre is`4pi xx 10^(-6) "Wb"//m^(2).` the
Last Answer : A current of 2 A is made to flow through a coil which has only one turn. The magnetic field produced at the centre is` ... m` C. `0.1 m` D. `0.001 m`
Description : Liver cells are (a) Hexagonal (b) Polygonal (c) Triangular (d) Irregular
Last Answer : (c) Triangular
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 : 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 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 : 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 : 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 : 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 : 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 : 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 : 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.
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
Last Answer : Answer: B
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 : 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 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 : A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each -Physics-10
Last Answer : half revolution When a rectangular coil is rotated in magnetic field, the direction of the induced current changes once in half revolution. As a result, the direction of the current in the coil remains the same. In text 13.7 Page:238
Description : Describe an activity to show that the magnetic field lines produced when current is passed through the circular coil. -Biology
Last Answer : Aim : To study the characteristics of magnetic field produced by a current carrying circular coil at its centre. Apparatus Required : Rectangular cardboard having two holes, Thick copper circular coils of different ... the coil.Field lines keep on diverging as we move away from the centre of loop.
Last Answer : If a constant current source is connected in time between the two terminals of the coil, the starting electric current generates a magnetic field according to the Biot - Savart Act. You ... Roll_and_And_Record_Word And here: https://en.wikipedia.org/wiki/Biot%E2% 80% 93Savart-t% C3% B6rv% C3% A9ny
Description : A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the uniform magnetic field `B= 0.2hati T` such that its direc
Last Answer : A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the ... energy of the coil in the given orientation is
Description : A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field `B=0.2 Wb//m^(2)`. The torque acting on the coil is
Last Answer : A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field `B=0.2 Wb//m^( ... N-m` tending to rotate the side AD into of the page
Description : A circular coil of `20turns` and radius `10cm` carries a current of `5A`. It is placed in a uniform magnetic field of `0*10T`. Find the torque acting
Last Answer : A circular coil of `20turns` and radius `10cm` carries a current of `5A`. It is placed in a uniform magnetic ... Nm B. 3.14 Nm C. 0.314 Nm D. zero
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 : A current of `0.1 A` circulates around a coil of 100 turns and having a radius equal to `5 cm`. The magnetic field set up at the centre of the coil is
Last Answer : A current of `0.1 A` circulates around a coil of 100 turns and having a radius equal to `5 cm`. The magnetic ... C. `4pixx10^(-5)T` D. `2pixx10^(-5)T`
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