In an electric motor,the direction of current in the loop reverses after every $........$ rotation.

State the direction of the magnetic field in the following case:

Why does a current-carrying conductor experience a force when it is placed in a magnetic field? State Fleming's left-hand rule.

Imagine that you are sitting in a chamber with your back to one wall. An electron beam,moving horizontally from the back wall towards the front wall,is deflected by a strong magnetic field to your right side. What is the direction of the magnetic field?

Under what condition does a current-carrying conductor kept in a magnetic field experience maximum force? On what other factors does the magnitude of this force depend? Name and state the rule used for the determination of the direction of this force.

State the rule which you use to find the direction of induced current or state Fleming's right-hand rule.