Question

12. Read the given statements and mark the correct option.
Statement 1 : The magnetic field is uniform inside a
current carrying solenoid.
Statement 2: The net charge in a current carrying
conductor is zero.
A. Both statements 1 and 2 are true and statement 2
is the correct explanation of statement 1.
Both statements 1 and 2 are true but statement 2
is not the correct explanation of statement 1.
Statement 1 is true but statement 2 is false.
D. Both statements 1 and 2 are false.
13.
A circuit is shown in the figure.​

Answer 1

Both statements are true but 2 is not explanation of 1.

Since in a solenoid the circles are of same area the magnetic field is uniform and decreases as move outward.

flux= B×A sin theta

The net charge is zero because the amount of electrons moving out are the same as that of coming in.