Question

Which of the following expressions is not a correct way of expressing the heat produced by the electric current.
(1 Point)

A. H = VIt

B. H = I*R*Rt

C. H = I*I* R*t

D. H = (V*V*t)/R

Answer 1

Answer:

C

Explanation:

P= VQ/t _____(1)

I= Q/t ______(2)

P=VI ________(3)

energy supplied in time

t= P×t _____(4)

P×t=V I t

From (3) and (4) equation

H=VIt

Ohm's law

V=IR

On substituting V in H=VIt

We get H=IR×It

H=I²Rt