EASY

12th CBSE

IMPORTANT

Earn 100

The protons are accelerated by a cyclotron, when a magnetic field of $2.0 T$ 2.0 T is applied perpendicular to the plane of the dees. Calculate the energy of the proton in $M e V$ MeV, if the circular path of the protons has a radius of $40 cm$ before the protons leave the cyclotron. Given mass of a proton $= 1.67 \times 10^{- 27} kg$ .

Important Questions on Magnetic Effect of Current

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 3

A cyclotron has an oscillatory frequency of

12 M H z

12 MHz and a dee radius of

50 cm

. Calculate the magnetic required to accelerate deuterons of mass

3.3 \times 10^{- 2} kg

and charge

1.6 \times 10^{- 19} C

. What is the energy of the deuterons emerging from the cyclotron?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 4

Alpha particles of mass

6 .68 \times 10^{- 27} kg

and charge

3.2 \times 10^{- 19} C

are accelerated in a cyclotron in which a magnetic field of

1.25 T

is applied perpendicular to the dees. How rapidly should the electric field between the dees be reversed? What are the velocity and kinetic energy of an alpha particle when it moves in a circular orbit of radius

25 cm

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 1

A current of

1 A

flows in a wire of length

0.1 m

in a magnetic field of

0.5 T

. Calculate the force acting on the wire when the wire makes an angle of (a)

90 °

(b)

0 °

, with respect to the magnetic field.

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 2

A current of

5.0 A

is flowing upward in a long vertical wire placed in a uniform horizontal northward magnetic field of

0.02 T

. How much force and in what direction will the field exert on

0.06 m

length of the wire?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 3

What is the magnitude of force on a wire of length

0.04 m

placed inside a solenoid near its centre, making an angle of

30 °

with its axis? The wire carries a current of

12 A

and the magnetic field due to the solenoid is of magnitude

0.25 T

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 4

A long straight conductor

P

carrying a current of

2 A

is placed parallel to a short conductor

Q

of length

0.05 m

carrying a current of

3 A

. The two conductors are

0.10 m

apart.
Calculate the magnetic field due to

P

Q

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 4

A long straight conductor

P

carrying a current of

2 A

is placed parallel to a short conductor

Q

of length

0.05 m

carrying a current of

3 A

. The two conductors are

0.10 m

apart.
Calculate the approximate force on

Q

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems for Practice>Q 5

A straight wire

1 m

long carries a current of

10 A

at right angles to a uniform magnetic field of

1 W b m^{- 2}

. Find the mechanical force on the wire and the power required to move it at

15 {ms}^{- 1}

in a plane at right angles to the field.

Important Questions on Magnetic Effect of Current

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