Copy and complete the diagrams to show the shape and direction of the magnetic field between the magnetic poles.

Why it necessary to connect an earth wire to electric appliances having metallic bodies?

A student while studying the force experienced by a current-carrying conductor kept in a magnetic field records the following observations:

i. The force experienced by the conductor increases as the current is increased.

ii. The force experienced by the conductor decreases as the strength of the magnetic field is increased.

Which of the two observations is correct and why?

Why are the magnetic field lines close curves?

If instead of electron a neutron enters a field, what will be its direction of motion? Give reasons for your answer.