The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

What is the resistance of the circuit shown above

A force varying linearly with the distance acts on a body as shown above, The work done on the body by the force during the first 10m of motion is

A short bar magnet is placed in earth's magnetic field, as shown above, which of the points II and III are/is possible positions of a neutral point?