Question

nichrome and copper wires of same length and radius are connected in series.current I passes through them. why does nichrome wire gets heated first?

Answer 1

Hey

The reason due to which nichrome wire gets heated early in comparison to copper wire is —

>> Nichrome is an alloy of nickel and chromium whereas copper is a metal .

As we know , alloy posses high resistivity than metals .

So , nichrome resists the flow of current mire and more and the energy gets dissipated more in the form of heat .

So , nichrome gets heated fastly in wire comparison to copper wire

Answer 2

Hey !!

Question

Nichrome and copper wires of same length same radius are connected in series. Current I is passed through them. Which wire heated up more and why ?

Answer

I is same in both

           when I is constant

      The heat produced is constant

              H = I²Rt

        H ∝ R

R ∝ f       f is higher for nichrome.

So, R is higher for nichrome.

More heat is produced in Nichrome wire.

DETAILED ANSWER FOR BETTER UNDERSTANDING

Among the two wires having similar length and radius, Nichrome wire gets heated up more as compared wire since resistivity of Nichrome is more than that of Copper. Also, Nichrome wire is a good conductor of current and have very less resistance, so it will heat sooner as compared to Copper.

GOOD LUCK !!