Name the factors on which the force acting on a current-carrying conductor placed in a magnetic field depends.

What is meant by electromagnetic induction? State the rule which helps in determining the direction of induced current.

In the below figure,$A$ and $B$ represent two straight wires carrying equal currents in a direction at right angles to the plane of paper inwards. Sketch separately the magnetic field lines produced by each current. Give a reason why the magnetic field at $K$ (mid-point of the line joining $A$ and $B$) will be zero.
What will be the effect on the magnetic field at $K$ if the current in wire $B$ is reversed?

Which instrument is used to convert electrical energy into mechanical energy?

Fleming's right-hand rule can be used to find the direction of the magnetic field.

The direction of magnetic field lines in a region outside the bar magnet is $.....$