ISRO Electronics & Communication (ECE) 2014 - Question 52

All ISRO Electronics & Communication (ECE) papers | ISRO Electronics & Communication (ECE) 2014

Topic: Network Theory

Following four resistances are connected in parallel; the largest power is dissipated by
1. 2.4 $\Omega$, 1 W
2. 5.1 $\Omega$, 2 W
3. 10 $\Omega$, 5 W
4. 22 $\Omega$, 10 W

  • A. 2.4 $\Omega$, 1 W
  • B. 5.1 $\Omega$, 2 W
  • C. 10 $\Omega$, 5 W
  • D. 22 $\Omega$, 10 W

Answer: A. 2.4 $\Omega$, 1 W

Explanation: In a parallel combination, the voltage ($V$) across each branch remains the same. Power dissipated is $P = V²/R$. Therefore, the branch with the minimum resistance will have the largest power dissipation. The 2.4 $\Omega$ resistor has the smallest resistance.

| | All questions of ISRO Electronics & Communication (ECE) 2014