JEE Main202313 Apr 2023Morning ShiftPhysicsCurrent ElectricityActual
Different combination of 3 resistors of equal resistance R are shown in the figures. The increasing order for power dissipation is: (A) (B) (C) (D)
Options
- AP B < P C < P D < P A
- BP C < P D < P A < P B
- CP C < P B < P A < P D
- DP A < P B < P C < P D
Correct answer
C. P C < P B < P A < P D
Step-by-step solution
The resistances can be calculated as R A = R + R 2 = 3 R 2 For second circuit 1 R B = 1 2 R + 1 R = 3 2 R ⇒ R B = 2 R 3 For third circuit R C = R 3 For fourth circuit R D = 3 R The formula for power is given by P = I 2 R . Clearly, P D > P A > P B > P C