Electric fuses are always connected in series with the live wire.

The correct option is ATrueAn electric fuse or circuit breaker is always connected in series with the live wire such that the current passes first through it before passing through the appliances connected to the circuit. So in case of heavy current flow or short circuit condition, the current flows through the fuse/circuit breaker and break the circuit to protect the electrical appliances connected to the circuit. If the fuse is connected in parallel with the live wire, in case of any faults in the circuit, a large amount of current will flow through the fuse and appliances simultaneously, and this can damage the appliances.