Question

A current of 0.2 A passes through a cell of emf 1.5 volt having internal resistance of 0.15 ohm. The potential difference measured in volts across both the ends of the cell will be

• A. 1.35 V
• B. 1.47 V
• C. 1.00 V
• D. 1.20 V

Answer 1

The correct option is B 1.47 V

Given that,

Current = $0.2A$

Internal resistance = $0.15ohm$

e. m. f = $1.5volt$

We know that,

$V=E-ir$

$V=1.5-0.2\times 0.15$

$V=1.5-0.03$

$V=1.47volt$

Hence, the potential difference is $1.47V$ across both the ends of the cell