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?
A.
80Ω
B.
75Ω
C.
45Ω
D.
20Ω
E.
10Ω
Correct answer is D
R/30 = 100/150R = 20Ω
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