<p>Problem set on power, current, voltage and resistance:</p><p>1. How many amperes does a 100 watt bulb require when operating on 120 volts?</p><p>2. A 250 watt radio will draw how many amps when operating on 240 volts?</p><p>3. How many ohms of resistance are present in a light bulb that draws 2 amperes at 120 volts?</p><p>4. A device that is powered by two 1.5 volt batteries draws 0.0015 amperes. What is its total resistance?</p><p>5. An iron that heats with the power of 1200 watts at 120 volts is turned on. How much current does it draw? Will a 15 ampere fuse blow?</p><p>6. How many ohms resistance are in a 120 volt hair dryer that draws 8 amps? How many watts of power are used?</p><p>7. You have two equations, V = IR and P = IV. Can you perform some substitutions and come up with new equations? If you can, what might they mean?</p><p>8. A stereo needs 200 watts of power, and you know your house provides 120 volts of AC electricity. How much current does the stereo draw?</p><p>9. How much resistance does the stereo in problem #8 give to the charges in the wire?</p><p>10. If the fuse on your circuit breaker can only take 10 amps, will plugging in your stereo from #8 blow the fuse if you also plug in your disco ball that draws 60 watts of power?</p>