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What is the value of R when G shows no deflection in the ...

What is the value of R when G shows no deflection in the circuit illustrated above?

What is the value of R when G shows no deflection in the circuit illustrated above?

A.

80Ω

B.

75Ω

C.

45Ω

D.

20Ω

E.

10Ω

View answer & explanation

Correct answer is D

R/30 = 100/150R = 20Ω

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