In the given circuit, the value of load resistance for which the power delivered is maximum is
In the given circuit, the value of load resistance for which the power delivered is maximum is


Right Answer is:
4.5 Ω
SOLUTION
For Maximum Power to be transferred the Load Resistance RL and the internal Resistance Rth should be Equal.
Rth = RL
Thevenin’s resistance can be found by replacing the 20 V source with a short-circuit.
As seen from Fig. , Rth = 1 + 2 + (3 || 3) = 4.5Ω.
Hence the value of load resistance for which the power delivered is maximum is 4.5Ω