In Activity 13.9, how do we think the displacement of rod AB will be affected if (i) the current in rod AB is increased; (ii) a stronger horse-shoe magnet is used, and (iii) the length of the rod AB is increased?

Which one of the following properties of a proton changes while moving freely in a magnetic field? (a) Mass (b) Speed (c) Velocity (d) Impulse

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.

The magnetic field in a given region is uniform. Draw a diagram to represent it

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.

Why don’t two magnetic field lines intersect each other?