## In text Questions of Page No. 229

In text Questions of Page No. 229

Q. No 1: Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
Ans:
In the following diagram the current is flowing clockwise. If we are applying right hand thumb rule to the left side of the loop then the direction of magnetic field lines inside the loop are going into the table while outside the loop they are coming out of the table. If we are applying right hand thumb rule to the right side of the loop then the direction of magnetic field lines inside the loop are again going into the table while outside the loop they are coming out of the table.

Q. No 2: The magnetic field in a given region is uniform. Draw a diagram to represent it.
Ans:
A uniform magnetic field is represented by parallel lines

Q. No 3: Choose the correct option.
The magnetic field inside a long straight solenoid-carrying current
(a) is zero
(b) decreases as we move towards its end
(c) increases as we move towards its end
(d) is the same at all points
Ans:
(d) The magnetic field inside a long straight current-carrying solenoid is uniform which is represented by parallel lines. Hence it is same at all points.

Consider a circular loop of wire lying in the plane of the table, The magnetic field in a given region is uniform, The magnetic field inside a long straight solenoid-carrying current