Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
(a) How many milliamperes are there in 1 ampere? (b) How many microamperes are there in 1 ampere?
The current sensitivity of a moving coil galvanometer is 5 divisions per milliampere and voltage sensitivity is 20 divisions per volt find the resistance of the Galvanometer