Q128 / 199 · NEET 2008 (Mains) · Physics

A current of $3 \mathrm{amp}$. flows through the $2 \Omega$ resistor shown in the circuit. The power dissipated in the $5 \Omega$ resistor is Figure

  • Correct answer
    A
    5 watt
  • B
    4 watt
  • C
    2 watt
  • D
    1 watt

Solution

Potential difference across $2 \Omega=6 \mathrm{~V}$ Current through $5 \Omega=\frac{6}{6}=1 \mathrm{~A}$ Power dissipated in $5 \Omega=(1)^2 \times 5=5$ Watt

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

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