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A source of emf having internal resistance of 6Ω dissipates maximum power in this circuit consisting of three resistor R 1 ,R 2 and R 3 as shown. Then which of the following is not true : (a) I 3 = 0.8 A (b) V = 24 volt (c) R 1 = 15Ω (d) R 1 = 30 Ω

A source of emf having internal resistance of 6Ω dissipates maximum power in this circuit consisting of three resistor R1,R2 and R3 as shown. Then which of the following  is not true : 

(a)
I3 = 0.8 A
(b)
V = 24 volt
(c)
R1 = 15Ω
(d)
R1 = 30 Ω

 

Grade:12

1 Answers

Saurabh Kumar
askIITians Faculty 2400 Points
9 years ago
As circuit diagram is not mentioned, But i would like to give you the concept about the problem.
For maximum power dissipation, internal resistance of the emf must be equal to the external resistance connected.
Then write the equation for power and adjust the value of current and resistance given in the circuit.

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