Three statements about a relay are given.
A relay has a coil that becomes a temporary magnet when in operation.
A large current in a relay coil is used to switch off a smaller current.
A small current in a relay coil is used to switch on a larger current.
Which statements are correct?
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
