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A current carrying wire of length ’ $l$ ’ is bent to form a circular coil of one turn. After that it is again bent to form a circular coil of two turns. Find ratio of magnetic moment of coils respectively.

Important Questions on Magnetic Effect of Current

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 59

Circular coils of different turns are made by a constant length current carrying wire. Find number of turns in coil for its maximum magnetic moment

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 60

Two identical current carrying coils are concentrie and perpendicular to each other. If magnetic moment of each coil is ’M’. Find resultant magnetic moment of two coils.

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 61

Four wires each of length $2.0 m$ , are bent in four-loop $P, Q, R$ and $S$ then suspended in uniform magnetic field. All loop carries equal currents, which statement of the following is true :

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 62

A magnet of magnetic moment

4 A - m^{2}

is held in a uniform magnetic field

5 \times 10^{- 4} T

with the magnetic moment vector making an angle

30 º

with the field. Work done in increasing the angle from

30 º

45 º

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 63

A bar magnet has a magnetic moment

2.5 {JT}^{- 1}

and is placed in a magnetic field of

0.2 T .

Work done in turning the magnet from parallel to antiparallel position relative to the field direction is

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 64

A circular coil of

‘ N ’

turns,

‘ R ’

radius carries a

‘ i ’

current. Work done in rotating this coil in an external magnetic field from

θ_{1} = 0 º

θ_{2}

= 90 °

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 65

A short bar magnet placed with its axis at

30 º

with uniform magnetic field of

0.16 T,

experiences a torque of magnitude

0.032 N - m

. The potential energy of bar magnet in stable equilibrium and in unstable equilibrium respectively:-

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 66

Magnetic moment and angular momentum of an orbital electron are

’ M ’

and

L

respectively. The specific charge of the orbital electron:

A current carrying wire of length ’l’ is bent to form a circular coil of one turn. After that it is again bent to form a circular coil of two turns. Find ratio of magnetic moment of coils respectively.

Important Questions on Magnetic Effect of Current

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A current carrying wire of length ’ $l$ ’ is bent to form a circular coil of one turn. After that it is again bent to form a circular coil of two turns. Find ratio of magnetic moment of coils respectively.