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?

In the diagram above, X and Y have resistances 6 and 4 ohms respectively, if the power dissipation in X is 10W then power dissipation in Y is