Q39 of 126 Page 198

Find the current in the three resistors shown in figure.


This question can be solved by critical analysis of the circuit. Three loops are present. In each loop there are 2 cells of equal emf opposing each other. Thus, the total effective emf is zero. Thus, there will be no current from either arms.


More from this chapter

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37

In the circuit shown in figure ϵ1 = 3V, ϵ2 = 2V, ϵ3 = 1V and r1 = r2 = r3 = 1Ω. Find the potential difference between the points A and B and the current through each branch.


 38

Find the current through the 10Ω resistor shown in figure.


 40

What should be the value of R in figure for which the current in it is zero.


 41

Find the equivalent resistance of the circuits shown in figure between the points a and b. Each resistor has a resistance r.