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 What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing? 6.6 66 183 18.3 6.6 66 183 18.3 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source? 9.7 23 230 97 9.7 23 230 97 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? 590 mA 59 mA 5.9 mA 27.2 mA 590 mA 59 mA 5.9 mA 27.2 mA ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law What is the voltage source for a circuit carrying 2 A of current through a 36 resistor? 7.2 V 72 V 1.8 V 18 V 7.2 V 72 V 1.8 V 18 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA? 8.2 82 8.2 k 820 8.2 82 8.2 k 820 ANSWER DOWNLOAD EXAMIANS APP
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