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The resistance of a wire that must be placed parallel with 12 ohm resistance to obtain a combined resistance of 4 ohm is

Q. The resistance of a wire that must be placed parallel with 12 ohm resistance to obtain a combined resistance of 4 ohm is

 A   2 Ohm
 B   4 Ohm
 C   6 Ohm
 D   8 Ohm
Answer:-6 Ohm

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The least distance of distinct vision is

Aeroplane was invented by