The charged particle in an atom that contributes positive charge is an 'electron'.

Substances that allow charges to pass through them are called conductors.

The zinc plate in a voltaic cell is usually coated with mercury to prevent polarization.

When bulbs are connected to the same source, the brightness of bulbs connected in series is more than the brightness of identical bulbs connected in parallel.

In household connections, no current passes through neutral wire when the switch is off.