1. Find the resistance in ohms of a light bulb that produces 60 W of power...
1. Find the resistance in ohms of a light bulb that produces 60
W of power when connected to 120 V household current. (5 pts)
2. Indicate if the statements below are true or false:
(a) AC currents are changing, and the voltage is constant
(b) DC currents are constant, and the voltage is constant
(c) The time dependence of AC current and voltage follows a “sin” wave with frequency 60 Hz
(d) When several light bulbs are arranged in a series combination, if one bulb burns out then the other lights stay on.
(e) When several light bulbs are arranged in a parallel
combination, if one bulb burns out then the other lights stay
on.
Homework Answers
Ques 1:
Resistance , R = V2/P = ( 60* 60) / 120 = 30 ohms (ans)
Ques 2:
(a) false
(b) true
(c)true
(d) false
(e) true
Add Answer to:
1. Find the resistance in ohms of a light bulb that produces 60
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