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Three equal resistances when combined in series are equivalent to 90 ohm . Their equivalent resistance when combined in parallel will be:

Options

  1. A10 ohm
  2. B30 ohm
  3. C270 ohm
  4. D810 ohm

Correct answer

A. 10 ohm

Step-by-step solution

Three equal resistance in series are 90 ohm. therefore resistance is 30 ohm . Three resistance each with 30 ohm in parallel gives 10 ohm.

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