Electricity

Unit of electrical force or electric pressure is called _
1. coulomb
2. ampere
3. ohm
4. volt
An electromotive force that causes electrons to flow is called _.
1. current
2. pressure
3. voltage
4. flux
A strip of wire that melts and breaks an electric circuit if the current exceeds a safe level is called _
1. MCB
2. fuse
3. wire break
4. none of these
A scientific instrument used to detect the presence of electric charges on a metal body is called _
1. fuse
2. battery
3. electroscope
4. electron
A tiny particle which rotates around the nucleus of an atom is called _.
1. proton
2. electron
3. neutron
4. neutriono
_ is the process of connecting the exposed metal parts of an electrical circuit to the ground.
1. Earthing
2. Exposing
3. Heating
4. Grounding
A fuse is a strip of alloy wire which is made of lead and tin with a very _melting point.
1. high
2. low
3. normal
4. medium
_ is a device used to protect buildings from the effects of lightning.
1. Arrester
2. Protector
3. Lightning arrester
4. fuse
_ is a process of charging an uncharged body by bringing a charged body near to it but not touching it.
1. conduction
2. convection
3. induction
4. radiation
Friction between objects results in transfer of _ between them.
1. protons
2. charges
3. electrons
4. energy