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Combination of Resistors

A resistance ...

Question

A resistance of 12 ohm is connected in parallel with another resistor X. The resultant resistance of the combination is 4.8 ohms. What is the resistance X in ohms?

A

8

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B

4

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C

6

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D

12

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Solution

The correct option is A
8

Resultant = 4.8 Ohms = $\frac{12 * R}{12 + R}$

R = 8 Ohms

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