An electric lamp is rated 240V, 40W. What is the cost of running the lamp for 72 hours if the electricity authority charges N2.50 per kWh?

Similar Questions

Calculate the energy required to vapourise 50g of water initially at 80oC.[specific heat capacity of...

The tendency of a body to remain at rest when a force is supplied to it is called ...

An equipment whose power is 1500W and resistance is 375 ohms would draw a current of ...

Which of the following cells does not require a dipolar for effective and efficient delivery of curr...

The density P of a spherical ball of diameter d and mass m is given by ...

The diagram above represents the field pattern obtained by bringing the poles of two magnets togethe...

Which of the following statements describes an atom accurately? i. atoms of all elements are iden...

A body is projected into space with an initial velocity V0 at an angle, θ to the horizontal. Which ...

The angle of deviation of light of various colours passing through a glass prism decreases in the or...

Which of the following statements about liquid pressure is NOT correct? The pressure ...