1.

Nichrome and copper wires of same length and area of cross-section are connected in sereis, current is passed through them. Why does the nichrome wire get heated first ?

Answer»

Solution :Rateofproduction OFHEAT,` P =I^2 R`, forgiven` l, P XX R,therefore rho_ ("nichrome") gt rho _(CU)`
`thereforeR_("Nichrome") gt R_(cu) `ofsame lengthandareaof CROSSSECTION.


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