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An electric lamp of 100 Omega, a toaster...

An electric lamp of `100 Omega`, a toaster of resistance `50 Omega` and a water filter of resistance `500 Omega` are connected in parallel to a `220 V` source. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances and what is the current through it ?

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MBD -HARYANA BOARD-ELECTRICITY-EXAMPLE
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