A scissor is a ………….. multiplier.

1 kWh = …………….. J.     

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

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

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? 

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

Name the factors affecting the turning effect of a body? 

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

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

i) is in the direction of displacement

10.

State the energy changes in the following while in use:

i) Burning of a candle

ii) A steam engine