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Eight resistance each of resistance 5ohm are connected in the circuit shown in figure the equivalent resistance between A and B is

Eight resistance each of resistance 5ohm are connected in the circuit shown in figure the equivalent resistance between A and B is

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Grade:12

4 Answers

Eshan
askIITians Faculty 2095 Points
5 years ago
Dear student,

You may use an important theorem for resolving this type of a symmetric circuit.

”The junctions along the symmetric bisector of the line joining A and B can be opened”

From this law, the branch AOB can be seperate from that of the above and then a simple circuit of series and parallel is formed as shown in figure.568-2050_circuit.png
Gitanjali Rout
184 Points
5 years ago
568-2050_circuit.pngYou may use an important theorem for resolving this type of a symmetric circuit.”The junctions along the symmetric bisector of the line joining A and B can be opened”From this law, the branch AOB can be seperate from that of the above and then a simple circuit of series and parallel is formed as shown in figure.
Khimraj
3007 Points
5 years ago
Due to symmetry we can remove resistance on opposite arc of AB.
THen you can easily solve and get answer 4R/7.
HOpe it clears.
Gitanjali Rout
184 Points
5 years ago
Due to symmetry we can remove resistance on opposite arc of AB.
THen you can easily solve and get answer 4R/7.

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