For a fuse, higher the current rating ….. is the fuse wire. 

Name the factors affecting the turning effect of a body? 

On reversing the direction of the current in a wire, the magnetic field produced by it gets .....

On what factor does the position of the centre of gravity of a body depend? 

State the energy changes in the following while in use:

i) Burning of a candle

b) i) What is the S.I unit of moment of force?

1 kWh = …………….. J.     

How is work done by a force measured when the force:

i) is in the direction of displacement

A scissor is a ………….. multiplier.

When a body is placed on a table top, it exerts a force equal to its weight downward on the table top but does not move or fall.

i) Name the force exerted on the table top.

ii) What is the direction of the force?