Resistances n, each r Ω, when connected in parallel give an equivalent resistance

Resistances n, each r Ω, when connected in parallel give an equivalent resistance of R Ω. If these resistances were connected in series, the combination would have a resistance in ohm, equal to

Options

(a) n²R
(b) R/n²
(c) R/n
(d) nR

Correct Answer:

n²R

Explanation:

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