Q113 / 180 · NEET 2026 (Cancelled) · Physics

A resistor is connected to a battery of $12$ V emf and internal resistance $2\ \Omega$. If the current in the circuit is $0.6$ A, the terminal voltage of the battery is :

  • A
    $10$ V
  • B
    $1.2$ V
  • C
    $12$ V
  • Correct answer
    D
    $10.8$ V

Solution

The terminal voltage $V$ of a battery discharging in a circuit is given by the relation:

$V = E - Ir$

Substituting the given values $E = 12$ V, $r = 2\ \Omega$, and $I = 0.6$ A:

$V = 12 - (0.6 \times 2)$

$V = 12 - 1.2$

$V = 10.8$ V

Answer: $10.8$ V

Hence, the correct answer is option: 'D'.

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