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11 Initially, a single resistor R 1 is wired to a battery. Then resistorR 2 is added in parallel. Are (a) the potential difference across R 1and (b) the current i 1 through R 1 now more than, less than, or thesame as previously?

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Answer:

Explanation:

Since , resistances are joined in parallel , potential difference across either of Rā‚ or Rā‚‚ will be same , and it will be equal to emf of the cell provided no internal resistance exists in the cell.

Since potential difference across Rā‚ is equal to emf and resistance is Rā‚ , current through it too will be same as that in the previous case.

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