Ohm's Law A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms. 2 40 4 20 2 40 4 20 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law A current of 200 µA through a 6.8 k resistor produces a voltage drop of 1.36 V 13.6 V 340 V 34.4 V 1.36 V 13.6 V 340 V 34.4 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately 151 µA 660 mA 15.1 µA 66 mA 151 µA 660 mA 15.1 µA 66 mA ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately 3.1 31 385 38.5 3.1 31 385 38.5 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law How much resistance is needed to draw 17.6 mA from a 12 volt source? 680 212 6.8 k 68 680 212 6.8 k 68 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance? 5.9 mA 590 mA 59 mA 27.2 mA 5.9 mA 590 mA 59 mA 27.2 mA ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS