Question

State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?

Answer 1

Appliances based on heating effect of electric current are:

1) Electric heater

2) Electric iron

3) Microwave oven

4) Induction cooker

Finely heated platinum wire is used in surgery rather than knife because melting point of platinum is $1768{}^{\circ }C$ is very high so it does not get melted easily when heated for cutting the tissues while doing surgery.