Magnetic Effect of Current

Q.

Can electric field lines pass through the conductor?

Q.

For the arrangement shown below, if we want to change the direction in which the magnetic needle gets deflected, then which of the following can be done?

1. Changing the material of the wire.

2. Changing the polarity of the cell.

3. Decreasing the voltage.

4. Increasing the voltage.

Q.

How? The magnetic field inside the body forms the basis of obtaining the images of different body parts.

Q. How magnetic field line are responsible for attraction and repulsion between two magnets and why??

Q.

The question Statement $I$ (Assertion) and Statement $II$ (Reason). The question has $4$ choices (a), (b), (c) and (d) out of which ONLY ONE is correct. So, select the correct choice.
Choices are
Statement $I$: Magnetic field lines are closed curves.
Statement $II$: Magnetic monopoles cant exist.

1. Statement $I$ is True, Statement $II$ is True; Statement $II$ is a correct explanation for Statement $I$

2. Statement $I$ is True, Statement $II$ is True; Statement $II$ is NOT a correct explanation for Statement $I$

3. Statement $I$ is True, Statement $II$ is False

4. Statement $I$ is False, Statement $II$ is True

Q.

What indicates the closeness of the magnetic lines of force?

Q.

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

1. Parallel currents repel and antiparallel currents attract.

2. None of these.

3. No force exist due to both currents.

4. Parallel currents attract and antiparallel currents repel.

Q. Name three electrical devices where the heating effect of current is used.What do these heating devices contain for heat production? [2 marks]

Q.

Which of the following setup is the correct depiction, if AB is a current-carrying rod ?

1. 

2. 

3. 

4. 

Q.

When a solenoid that is carrying current is freely suspended, it comes to rest along a particular direction .Why does this happen?