Current Electricity and Electrical InstrumentHard
Question
Three equal resistance each of R ohm are connected as shown in figure. A battery of 2 volts of internal resistance 0.1 ohm is connected across the circuit. Calculate the value of R for which the heat generated in the exeternal circuit is maximum.
Options
A.0.1 Ω
B.0.2 Ω
C.0.3 Ω
D.0.4 Ω
Solution
For Pmax ⇒ r = Req , Req = R/3
0.1 = R/3 ⇒ R = 0.3 Ω
0.1 = R/3 ⇒ R = 0.3 Ω
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