Current Electricity

Question: When the resistance of $9 \Omega$ is connected at the ends of a battery, its potential difference decreases from 40 volt to 30 volt. The internal resistance of the battery is

1) $6 \Omega$

2) $3 \Omega$

3) $9 \Omega$

4) $15 \Omega$

Solution:

Explanation: No Explanation

Kirchhoff's Law Cells Internal Resistance

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