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. 4 20 2 40 4 20 2 40 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be? 32 V 320 V 3.2 V 8 V 32 V 320 V 3.2 V 8 V 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? 18.3 66 183 6.6 18.3 66 183 6.6 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor? 8.25 V 14.6 V 146 V 82.5 V 8.25 V 14.6 V 146 V 82.5 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 660 mA 151 µA 66 mA 15.1 µA 660 mA 151 µA 66 mA 15.1 µA ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law The formula to find I when the values of V and R are known is I = V/R I = VR V = IR I = R/V I = V/R I = VR V = IR I = R/V ANSWER DOWNLOAD EXAMIANS APP
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