Determine the power consumed by the blow-dryer

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Reference no: EM13244720

1. A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 10 A, and that of the vacuum cleaner is 5.0 A.

(a) Determine the power consumed by the blow-dryer.

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

(c) Determine the ratio of the energy used by the blow-dryer in 13 minutes to the energy used by the vacuum cleaner in one-half hour.

Ebd / Evc =

2. The rms current in a copy machine is 7.75 A, and the resistance of the machine is 13.4 ?.

(a) What is the average power?

(b) What is the peak power delivered to the machine?

3. A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(157.0 Hz)t].

(a) What is the frequency of the alternating current?

(b) Determine the resistance of the bulb's filament?

Reference no: EM13244720

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