Physics Past Questions and Answers

Which of the following instruments can be used to compare the relative magnitude of similar charges on two given bodies?

The unit of inductance is

A household refrigerator consumes electrical energy at the rate of 200 W. lf electricity costs 5 k per kWh, calculate the cost of operating the appliance for 30 days.

Calculate the escape velocity of a satellite launched from the earth’s surface (Take g as 10ms^-2 and the radius of the earth as 6.4 x 10⁶m)

What is the gravitational potential due to a point mass m at a distance from it? (G = gravitational constant)