Question

$AB$ is part of a circuit as shown, that absorbs energy at a rate of $50W$. $E$ is an electromotive force device that has no internal resistance.

• A. Potential difference across $AB$ is $48V$
• B. Electromotive force device is $48V$.
• C. Point $B$ is connected to the positive terminal of $E$.
• D. Rat of conversion from electrical to chemical energy is $48W$ in device $E$.

Answer 1

Answer: (B)

Electromotive force device is $48V$.

$\begin{array}{c}{i}^2\left(2\right)+i.E=50\\ \Rightarrow 2+E=50\\ \Rightarrow E=48V\\ Hence,\\ optionBiscorrectanswer.\end{array}$