Numerical

A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:

(i) The resistance of the wire, and

(ii) The heat energy produced in 1 minute.

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#### Solution

Given, current, I= 0.2 A; p.d. = 15 V

(i) A/C to Ohm's law

V=IR

R = `"v"/"I" = 15/0.2 = 75 Omega`

(ii) energy produced in one minutes is:

H=I^{2} Rt = (0.2)^{2} x 75 x 60 =180 J

Concept: Electric Potential Difference

Is there an error in this question or solution?

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