Answers

2016-02-16T18:25:28+05:30
 (i) Electric power is related to voltage and electric current as: Power = Voltage × Current It is given that the rating of the electric iron is 750 W, 220 V. Let the current passing through the bulb be I. Therefore, 750 = 220 × I I
Therefore, 3.41 A current passes through the electric iron.

(ii) Electric power is related to voltage and resistance as: That is, It is given that the rating of the electric bulb is 750 W, 220 V. Therefore, Therefore, the electric iron offers 64.53 Ω resistance when in use.
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