Q32 of 126 Page 198

Consider the circuit shown in figure. Find the current through the 10Ω resistor when the switch S is A. open B. closed.


0.1A and 0.3 A

Given, resistor , and .


A If the switch is open, both resistors are in series.


Total resistance,


Current,


B If the switch is closed, is short circuited.


Total resistance,


Current,


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Find the equivalent resistance of the network shown in figure between the points a and b.


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A wire of resistance 15.0 Ω is bent to form a regular hexagon ABCDEFA. Find the equivalent resistance of the loop between the points A and B, B A and C and C A and D.

 33

Find the currents through the three resistors shown in figure.


 34

Figure shows a part of an electric circuit. The potentials at the points a, b and c are 30 V, 12 V and 2 V respectively. Find the currents through the three resistors.