Electricity And Magnitism, Resistance

Electricity and Magnetism Level 2

Find the equivalent resistance between the points P and Q

Hint- When current passes through a which is not connected to any other wire/device the resistance gets cancelled

5 3 4 1

Ankit Vijay by Ankit Vijay , 22, India

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2 solutions

Zohurul Islam
Aug 25, 2014

Cancel the 100 ohms resistances. Find the equivalent resistance of the parallel combination of 6 ohms and 3 ohms along with the series combination of 2 ohms and 4 ohms. Make a series combination of the equivalent resistance with 1.5 ohms and 2 ohms resistances. 6||3||(2+4)+1.5+2=5 ohms

1 Helpful 0 Interesting 0 Brilliant 1 Confused
Ronn Concepcion
Jun 19, 2014

Resistors 100 ohms, 100 ohms, 100 ohms, 15 ohms, and 25 ohms will be cancelled out. Thus remains a series connection of 1.5 ohms, in parallel connection of 6 ohms, 3 ohms, and 3 ohms, and in series again in 2 ohms.

Rpq = 1.5 + [1/(1/6)+(1/6)+(1/3)] + 2 = 5 ohms

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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