MULTIPLE CHOICE

EXPLANATION NOT NEEDED

6. If a current of 10.0 A takes 3.0 x 102 s to boil a kettle of water requiring 3.6 x 105 J of energy, what is the potential difference across the kettle? a. 120 V b. 220 V 0.230 V d. 240 V 7. An LED lightbulb has a wattage rating of 7.5 W. What current would go through the bulb when a voltage of 2.9 V is applied? a. 22A b.2.6A c. 0.39A d.0A 8. A 100 W lightbulb runs for 8 hours a day for a year (365 days). How much energy does it use over this period? a. 2.92x105kW-h b.1.1x105kW-h c.1.1x109J d.3.2x109J 9. The average American household uses about 30 kW'h of electricity a day. What is this in J? a. 30 b. 2,592,000 0. 2,592,000,000 d. 108,000,000 10. An ammeter should be connected in and a voltmeter should be connected in . a. parallel, parallel b. parallel, series c. series, parallel d. series, series