Regulate the voltage
Increase the voltage
Give a relatively large impedance of alternating current
Give a relatively large impedance of direct current
The function of the commutator in a D.C machine is
The fundamental characteristic of all waves are
The fundamental scientific principle in the operation of battery is
The fuse in an electric circuit is connected in
The fuse in our domestic electric circuit melts when there is a high rise in
The gas thermometers is more sensitive than the liquid thermometre because gases
The group of solar cells joined together in a definite pattern is called a
The hair of shaving brush clings together when removed from water due to
The half-life of a radioactive substance depends upon
The head mirror used by ENT doctors is