Question

In the circuit shown the readings of ammeter and voltmeter are $4A$ and $20V$ respectively. The meters are non-ideal, then $R$ is

• A. $5\Omega$
• B. Less than $5\Omega$
• C. Greater than $5\Omega$
• D. Between $4\Omega$ and $5\Omega$

Answer 1

The correct option is C Greater than $5\Omega$

According to given condition :-

$I_{x}R=20VR=\frac{20}{I_x}$

$I_X$ will less than 4 A so R will also greater than 5$\Omega$