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In the given circuit, it is observed that the current I is independent of the value of the resistance R_6. Then the resistance values must satisfy

Option: 1

R_1 R_2 R_5=R_3 R_4 R_6


Option: 2

\frac{1}{R_5}+\frac{1}{R_6}=\frac{1}{R_1+R_2}+\frac{1}{R_3+R_4}


Option: 3

R_1 R_4=R_2 R_3


Option: 4

R_1 R_3=R_2 R_4=R_5 R_6


Answers (1)

best_answer

Since current I is independent of R_6, it follows that the resistances R_1, R_2, R_3 and R_4 must form a balanced Wheatstone bridge.
\therefore \quad (c)

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