A blow-dryer and a vacuum cleaner each operate with a voltage of120 V. The curre

Question

A blow-dryer and a vacuum cleaner each operate with a voltage of120 V. The current rating of the blow-dryer is 12 A, and that of the vacuum cleaner is 5.5 A. (a) Determine the power consumed by theblow-dryer.
1    W

(b) Determine the power consumed by the vacuum cleaner.
2                             W

(c) Determine the ratio of the energy used by the blow-dryer in11 minutes to the energy used by thevacuum cleaner in one-half hour.
Ebd / Evc =        (a) Determine the power consumed by theblow-dryer.
1    W

(b) Determine the power consumed by the vacuum cleaner.
2                             W

(c) Determine the ratio of the energy used by the blow-dryer in11 minutes to the energy used by thevacuum cleaner in one-half hour.
Ebd / Evc =       

Explanation / Answer

Since the power consumed is equal to U*I so the blow-dryer should be 1440 W and the vacuum cleaner is660 Ebc=1440W*11min Evc=660W*30min so Ebc/Evc=(1440/660)*(11/30)=4/5

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