Which of the following is a primary cell ?.
Voltaic cell
Leclanche cell
Daniel cell
All of these
Pick the odd one
Polythene
Rubber
Glass
Iron
A fuse wire is made of :
60% lead and made 40% tin
30% lead and 70% copper
30% copper and 70% lead
60% tin and 40% lead
The colour of live wire is
Red or brown
Black or blue
Green or yellow
None of these
Which instrument is used to measures the amount of electricity used by us?
Multimeter
Galvanometer
Electrometer
Moving charge constitute a
Potential difference
Current
Resistance
Which is used to close or open a circuit?
Socket
Switch
Plug
Wind is one of the source of electric current, which energy is used to rotate the blades of windmills?
Kinetic energy
Potential energy
Solar energy
A dry cell converts
Chemical energy into mechanical energy
Chemical energy into electrical energy
Chemical energy into potential energy
Chemical energy into kinetic energy
The potential difference between live wire and the neutral wire is
120v
240v
220v
250v
