Q30 of 126 Page 198

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


r/3

Given, resistance of each resistor is r.


The equivalent circuit is given as follows:


Therefore, equivalent resistance is



More from this chapter

All 126 →
28

Figure shows a part of a circuit. If a current of 12 mA exists in the 5 kΩ resistor, find the currents in the other three resistors. What is the potential difference between the points A and B?


 29

An ideal battery sends a current of 5A in a resistor. When another resistor of value 10 Ω is connected in parallel, the current through the battery is increased to 6A. Find the resistance of the first resistor.

 31

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.

 32

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