Current Electricity and Electrical InstrumentEasy
Question
A battery of internal resistance 4Ω is connected to the network of resistance as shown in figure. In order that the maximum power can be delivered to the network, the value of R in Ω should be
Options
A.
B.2
C.
D.18
Solution
The given circuit is balanced Wheatstone′s bridge.
Thus, no current will flow across 6 R of the side CD. The given circuit will now be equivalent to
For maximum power, next external resistance = Total internal resistance
or 2 R = 4
or R = 2Ω.
Thus, no current will flow across 6 R of the side CD. The given circuit will now be equivalent to
For maximum power, next external resistance = Total internal resistance
or 2 R = 4
or R = 2Ω.
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A 50 Ω bulb is in series with a room heater and the combination is connected across the mains. To get max. heater o...Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit v...In the figure a part of circuit is shown :...In the electric network shown, when no current flows through the 4Ω resistor in the arm EB, the potential differenc...Two nonideal batteries are connected in parallel consider the following statements : (A) The equivalent emf is smaller t...