2024 Current ElectricityTerminal Voltage and Internal Resistance Easy Question 10 of 130 in Current Electricity

The terminal voltage of the battery, whose emf is 10 V and internal resistance 1 Ω, when connected through an…

The terminal voltage of the battery, whose emf is 10 V and internal resistance 1 $\Omega$, when connected through an external resistance of 4 $\Omega$ as shown in the figure is:
A 8 V
B 10 V
C 4 V
D 6 V

The answer is A.

Solution

Current $I = \frac{E}{R + r} = \frac{10}{4 + 1} = 2$ A Terminal potential difference $V = E - Ir = 10 - 2 \times 1$ $V = 8$ V

Concept Terminal voltage of a battery with internal resistance

Current Electricity in past papers

130 questions from this chapter have appeared across 27 exam years.