Current Electricity · Current and resistance
Two known resistances of R and 2R and one unknown resistance X are connected in a circuit as shown in the figure. If the equivalent resistance between points A and B in the circuit is X , then the value of X is .
- (1)
- (2)
- (3)
- (4)
We corrected a printing error in the original paper
Source printed “Two known resistance”; “and and”.
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