Question

A micro-ammeter gives full scale deflection at 100 $\mu$A. Its resistance is 2k$\Omega$. The resistance required to convert it to a voltmeter reading 1V is

• A. 1 k$\Omega$in series
• B. 8 k$\Omega$in series
• C. 1 k$\Omega$n parallel
• D. 8 k$\Omega$in parallel

Answer 1

Answer: (B)

I × R = (0.8 v)
$10^{-4}\times R=0.8$
$R=\left(8\times 10^3\right)\Omega$in series