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  4. A car has a fresh storage battery of e.m.f 12 V and internal resistance 2 × 10-2 Ω. If the starter motor draws a current of 80 A. Then the terminal voltage when the starter is on is

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

KCETKCET 2020

Solution:

$V=E-ir=10.4 \,V$