Right Hand Thumb Rule

Q.

Write the formula to calculate spin-only magnetic moment.

Q. Explain about induced current.

Q.

Which of the following is correct regarding the nature of parallel and anti-parallel currents?

1. Parallel current carrying conductors repel and antiparallel current carrying conductors attract.

2. Parallel current carrying conductors attract and antiparallel current carrying conductors repel.

3. No force exist due to both currents.

4. None of these.

Q.

A conducting loop having a capacitor is moving outward from the magnetic field then which plate of the capacitor will be positive

Q.

In a circular loop, we can find the polarity of the faces by using

1. Fleming's left-hand rule

2. right-hand thumb rule

3. Ampere's swimming rule

4. None of these

Q.

In the figure shown below, current is flowing in the anticlockwise direction in a loop of wire. The part of the loop that faces towards you is ___ pole.

1. north

2. south

3. neither north nor south

4. Can't be determined

Q. In the given question, the magnetic field at the centre of the loop will point away from you.

1. True
2. False

Q.

A current carrying coil when suspended freely can rest in any direction.

1. True
2. False

Q.

Look at the figure given below and answer the question based on it.

Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings.

What happens to a compass at a particular point near the copper wire if the current through the circuit is increased?

1. The deflection of the compass is increased

2. None of These

3. The deflection of the compass is decreased

4. The direction of the compass needle is reversed

Q. What is the direction of magnetic field at a point due to an infinitely long carrying current wire?

1. Parallel to the current
2. Antiparallel to the current
3. Along the perpendicular drawn from a point on the wire
4. Perpendicular to the plane containing the conductor and the point