resistors of 20omega 20 omega and 30omega are


Resistors of 20Ω ,20 Ω and 30Ω  are connected in parallel.

What resistance must be added in serieswith the combination to obtain a total resistance of 10 .

If the complete circuit expends a power of 0.36kW,

Find the total current ?owing.

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Physics: resistors of 20omega 20 omega and 30omega are
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