Question

2 identical wired one of inchworm and other of copper are connected in series and a current() is passed through
them. State the changes observed in the temperatures of 7 wires. Justify your answer. State the law which explains
the above observation​

Answer 1

Answer:

temperature of inchworm wire is more than the temperature of copper wire.

Explanation:

As we know that two wires are identical in size so here as per formula of resistance of the wire we know that

$R = \rho \frac{L}{A}$

so the wire with more resistivity will have more resistance

so we know that when two wires with different resistance connected in series then the current flows through them is same

So here we will have

$Heat = i^2 R t$

so heat developed in two wires will depend on the value of resistance of two wire

As we know that copper wire is of less resistivity so here heat developed in copper wire is less than that of inchworm wire

So temperature of inchworm wire is more than the temperature of copper wire.

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Topic : Heating effect of current

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