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Question

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

Solution
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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 C is very high so it does not get melted easily when heated for cutting the tissues while doing surgery.

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