Physics Past Questions and Answers

When the r.m.s value of a source of electricity supply is given as 240v, it means that the peak value of the supply is

Which of the following operations can be used to convert an alternative current dynamo into a direct current dynamo

The net capacitance in the circuit above is

The instrument used to measure the pressure of a gas is

A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms\(^{-2}\) the power expended is