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An electric oven of resistance 125 ohm, a toaster ofresistance 50 ohm and an electric geyser of resistance250 ohm are connected in parallel to a 220 V source.What is the resistance of an electric iron connectedto the same source that takes as much current as allthe three appliances and what is the current through[Ans. R = 31.25 ohm , I = 7.04 A]it? |
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Answer» Answer:
=> 8/250 => Rt = 31.25 ohm
=>220 = I × 31.25 => I = 220/31.25 => I = 7.04 ampere
=> 220 = 7.04×R => R = 220/7.04 => R = 31.25 ohm
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