Science Answer In One word.

Electrical conductivity or specific conductance is the measure of a material’s ability to conduct an electric current.

An electric current is measured by the amount of electric charge moving per unit time at any point in the circuit. The conventional symbol for current is I.

Batteries are a collection of one or more cells whose chemical reactions create a flow of electrons in a circuit.

Rubber, wood, plastic, glass.

Electric bulb, geyser, Iron box.

Electric fuse is a safety device which is used in household wiring and in many appliances.

Electric cell.

The SI unit of electrical conductivity is Siemens/metres (s/m).

Current travels at the speed of 1/100th times the speed of light 0.0002 m/s.

Wire.

Switch.

Electrolytes.

Dry cell.

Voltmeter.

Key can be placed anywhere in the circuit.

Electric cell.