Judge the equivalent resistance when the following are connected in parallel
(a) 1W and 106 W (b)1W and 103 W and 106 W

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Solution

For parallel connection, the voltage is the same.
R₁ = V²/P₁
R₂ = V²/P₂
Equivalent resistance = V²/ (P₁ + P₂)
For 1W and 106W
R = V²/107 Î©
For 1W and 103 W and 106 W
R = V²/ 210 Î©

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