Question 31 of 33 3.0 Points A current of 0.8 A passes through a lamp with a res

Question

Question 31 of 33 3.0 Points A current of 0.8 A passes through a lamp with a resistance of 6 Ohms. What is the power supplied to the lamp in Watts? Round your answer to 2 decimal places. Question 32 of 33 3.0 Points A hair dryer uses 578 W of power. If the hair dryer is using 7 A of current, what is the voltage (in Volts) that produces this current ? Round your answer to 1 decimal place. Question 33 of 33 3,0 Points A 2.1 V battery supplies energy to a simple circuit at the rate of 59 W. What is the resistance of Round your answer to 1 decimal place. the circult in Ohms?

Explanation / Answer

31) Current I=0.8A

Resistance R = 6 Ohms

Power supplied = I2R

= 3.84 W

32) Power P = 578W

Current I = 7 A

P=VI

So, Voltage V = P/I

= 578/7

= 82.5 V

33) Voltage of battery V = 2.1V

Power P = 59W

P=V2R

So, Resistance R=P/V2

=59/4.41

=13.3 ohm

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