If 100 J of work must be done to move electric charge equal tp 4C from a place where potential is `-10V` to another place where potential si V volt, find the value of V.

If 20 J of work has to be done to move an electric charge of 4 C from a point, where potential is 10 V to another point, where potential is V volt, find the value of v.

On moving a charge of 2C from a point A where potential is +12V to a point B where potential is -12 V, the work done is -

On moving a charge of 7C from a point x where potential is +5.5V to a point y where potential is -7.6 V, the work done is -

If 10 J of work is to be done in moving a charge of -200C from A to B, which of the two points is at higher potential ? What is the potential difference ?

Find the surface density of electric charge at a place on the earth's surface, where the rate of fall of potential is 2.5 V.

The work done in moving a charge of 2 xx 10^(-9) C from a point of potential - 3000 V to another point P is 5 xx 10^(-5) J . Find the potential at the point P.

A capacitor of capacitance 4muF is charged to a potential of 100 V. it is then disconnected from the battery and connected in parallel with another capacitor C_(2) . If their common potential is 40 volts, then the value of C_(2) is

The kinetc energy of a chargd particle decreased by 10 J as it moves from a point at potential 100 V to a point at potential 200V . Find the charge on the particle.