Force on a Current Carrying Conductor Placed in External Magnetic Field

Q.

A straight current carrying conductor is placed in a magnetic field but no force acts on it. What can be the reason behind this?

1. The conductor is parallel to the magnetic field.

2. The conductor is perpendicular to the magnetic field.

3. The conductor is making ${60}^{\circ }$ with the magnetic field.

4. The conductor is making ${45}^{\circ }$ with the magnetic field.

Q.

A uniform magnetic field exists in a plane pointing from left to right as shown in the figure. In this field, an electron and a proton move vertically as shown. The electron and the proton experience forces:

1. Both pointing into the plane.
2. Both pointing out of the plane.
3. In the direction of magnetic field.
4. In the opposite direction of magnetic field.

Q.

The force due to the magnetic field on a current carrying conductor is _______ to the magnetic field and_________ to the current.

1. perpendicular, perpendicular

2. perpendicular, parallel

3. parallel, parallel

4. parallel, perpendicular

Q. When a current carrying conductor moves in a magnetic field in a direction different from that of the field, it experiences a force called the .

1. normal force
2. frictional force
3. lorentz force

Q. Which of the following objects can experience a force in the magnetic field?

1. Plastic
2. Wood
3. Moving charge
4. Glass

Q.

An electron enters into the magnetic field and perpendicular to it, as shown in the figure. The direction of the force acting on the electrons will be?

1. Out of the page.

2. Into the page.

3. To the left.

4. To the right.

Q. The force experienced by the magnet is due to the magnetic field of the current carrying conductor.

1. False
2. True

Q.

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

1. get deflected in a vertically upward direction

2. get deflected in the opposite direction

3. move in a circular path with clockwise direction

4. move in a circular path with anti-clockwise direction

Q.

If a bar magnet is held stationary inside a coil, then the induced current in the coil is_______.

1. 0 ampere

2. 1 ampere

3. 0.02 ampere

4. 2 ampere

Q.

The magnitude of the force acting on a current carrying wire placed in a magnetic field in the direction perpendicular to its length depends on ___.

1. length of the wire

2. current I flowing in the wire

3. strength of magnetic field

4. mass of wire

Q. Which of the following property of a proton can change when it moves freely in a magnetic field?

1. Velocity
2. Kinetic energy
3. Mass
4. Speed