What is Relay? Tell me about Transformer? How many volt battery required in car for ignition? Differences between ac current and dc current?

Question

Accepted Answer

Relay is an electrically operated switch. Transformer is a device that transfers electrical energy between two or more circuits. Car ignition requires a 12-volt battery. AC current and DC current differ in terms of direction and magnitude.

Relay is an electrically operated switch that uses an electromagnet to control the flow of current.
Transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Car ignition typically requires a 12-volt battery to provide the necessary electrical power.
AC current periodically changes direction, while DC current flows in a single direction.
AC current is commonly used in household electrical systems, while DC current is used in batteries and electronic devices.

Accepted Answer

A relay is an electronically operated switch. It consists of a set input terminal for a single or multiple control siglad and a set of operting contact terminal the switch may have any number of contract in muttiple contact form , such as make contact , brek contact or combination therof