Fleming's Left Hand Rule

Q. When a current carrying wire is placed in a uniform magnetic field it experiences a force. The direction of this force is given by

1. Fleming’s right hand rule
2. Fleming’s left hand rule
3. Right hand thumb rule
4. Left hand thumb rule

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

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

Q.

Suppose a room has a magnetic field, directed downwards. Then in order to experience the maximum magnetic force, the current carrying wire must be kept perpendicular to the magnetic field i.e horizontal to it.

1. False

2. True

Q.

In Fleming's left-hand rule, What does the thumb, forefinger and middle finger denotes respectively?

1. Field-Force- Current

2. Force-Field-Current

3. Current-Field-Force

4. Current-Force-Field

Q.

In Fleming’s left hand rule:

1. Middle finger - direction of current

2. Thumb - direction of magnetic field

3. Fore finger - direction of force

4. Thumb - direction of current

Q. In the given figure, the current in the left arm will be from A to B. State true or false.

1. False
2. True

Q. When the magnetic field is directed horizontally towards the right, the direction of the current will be:

1. From A to B
2. From B to A
3. There will be no current
4. Can’t be determined

Q.

In Fleming’s left-hand rule, the middle finger represents the direction of the magnetic field.

1. True

2. False

Q.

A uniform magnetic field exists in the plane of a paper pointing from left to right as shown in Figure. The electron and the proton in the field experiences a force:

1. Forces both pointing into the plane of paper

2. Forces both pointing out of the plane of paper

3. Forces pointing opposite and along the direction of the uniform magnetic field on proton and electron respectively

4. Forces pointing into the plane of paper and out of the plane of paper for proton and electron respectively

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 anti-clockwise direction

4. move in a circular path with clockwise direction