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A changed particle, having charge $' q'$ accelerated through a potential difference $' V'$ enters a perpendicular magnetic field in which it experiences a force $F .$ If $' V'$ is increased to $5 V,$ the particle will experience a force

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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 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

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 9

A long solenoid carrying a current produces a magnetic field

B

along its axis. If the current is doubled and the number of turns per

cm

is halved, the new value of magnetic field will be equal to

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Gamma Question Bank for Engineering Physics>Chapter 18 - Moving Charges and Magnetism>Assignment>Q 10

A long solenoid has

200

turns per cm

and carries a current of

2.5 Amps

. The magnetic field at its center is

(μ_{0} = 4 π \times 10^{- 7} weber / amp - m)

A changed particle, having charge 'q' accelerated through a potential difference 'V' enters a perpendicular magnetic field in which it experiences a force F. If 'V' is increased to 5V, the particle will experience a force

Important Questions on Moving Charges and Magnetism

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A changed particle, having charge $' q'$ accelerated through a potential difference $' V'$ enters a perpendicular magnetic field in which it experiences a force $F .$ If $' V'$ is increased to $5 V,$ the particle will experience a force