Question

Which of the following is not equal to watt?

• A. $\frac{\text{joule}}{\text{second}}$
• B. $\text{ampere}\times \text{volt}$
• C. $(ampere{)}^2\times ohm$
• D. $\frac{\text{ampere}}{\text{volt}}$

Answer 1

The correct option is D $\frac{\text{ampere}}{\text{volt}}$

We know that in electrical circuits, $P\left(power\right)=Vi=i\times iR=i^{2}R$

$\Rightarrow$ $\left[\right(ampere{)}^2\times ohm=Watt]$ Similarly $[ampere\times volt=Watt]$ also,

For mechanical work,

$Power=\frac{Work}{time}=\frac{Joule}{second}$

So, the $ampere/volt$ is thecorrect answer.