Electric fuses is a safety device . Wires made from some special materials ( lead + tin or , copper + tin ) melt quickly and break when large electric currents are passed through them. These wires are used for making electric fuses
Incandescent electric bulbs are often used for lighting but they also give heat. It means that a part of electricity consumed is used in producing heat. This is not desirable as it results in the wastage of electricity. The fluorescent tube-lights and compact fluorescent lamps (CFLs) are better electricity efficient lighting sources. Nowadays, the use …
light emitting diode (LED)
compact fluorescent lamps (CFLs)
A current carrying coil of an insulated wire wrapped around a piece of iron is called an electromagnet. Electromagnets are used in many devices.
h a combination of two or more cells is called a battery.
