Question

A car has a fresh storage battery of e.m.f $12V$ and internal resistance $2\times 10^{-2}\Omega$. If the starter motor draws a current of $80A$. Then the terminal voltage when the starter is on is

• A. 12V
• B. 8.4V
• C. 10.4V
• D. 9.3V

Answer 1

Answer: (C)

$V=E-ir=10.4V$