List of top Physics Questions on Moving Charges and Magnetism asked in CBSE CLASS XII

A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 20 cm from the wire?

A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.5 m below the line?

A long straight wire in the horizontal plane carries a current of 50 A in north to south direction. Give the magnitude and direction of B at a point 2.5 m east of the wire.