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A current carrying loop is placed in magnetic field as shown in figure. Find time period of small oscillation around as axis passing through diameter of coil. Mass of coil is $m,$ radius is $R .$

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Important Questions on Moving Charges and Magnetism

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 1

A particle of mass $M$ and charge

Q

moving with velocity

\vec{v}

describes a circular path of the radius $R$ when subjected to a uniform transverse magnetic field of induction $B$ . The work done by the field when the particle completes one full circle is

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 2

A changed particle, having charge

' q'

accelerated through a potential difference

' V'

enters a perpendicular magnetic field in which it experiences a force

F .

' V'

is increased to

5 V,

the particle will experience a force

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 3

The magnetic field due to a current carrying circular loop of radius

3 cm

at a point on the axis at a distance of

4 cm

from the centre is

54 μ T

. What will be its value at the centre of the loop?

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 4

A circular coil of radius

R

carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance

r

from the centre of the coil, such that

r ≫ R

, varies as

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 5

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

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 6

The earth's magnetic field at a given point is

0.5 \times 10^{- 5} Wb m^{- 2}

. This field is to be cancelled by magnetic induction at the centre of a circular conducting loop of radius

5.0 cm

. The current required to be flown in the loop is nearly

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 7

Along straight wire carrying current of

30

A is placed in an external uniform magnetic field of induction

4 \times 10^{- 4} T

. The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic induction (in tesla) at a point

2.0 cm

away from the wire is

(μ_{0} = 4 π \times 10^{- 7} {Hm}^{- 1})

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 8

Two long straight wires are set parallel to each other. Each carries a current

i

in the same direction and separation between them is

2 r

. Intensity or magnetic field midway between them is

A current carrying loop is placed in magnetic field as shown in figure. Find time period of small oscillation around as axis passing through diameter of coil. Mass of coil is m, radius is R.

Important Questions on Moving Charges and Magnetism

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A current carrying loop is placed in magnetic field as shown in figure. Find time period of small oscillation around as axis passing through diameter of coil. Mass of coil is $m,$ radius is $R .$