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. 40 4 2 20 40 4 2 20 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law How much resistance is needed to draw 17.6 mA from a 12 volt source? 6.8 k 212 68 680 6.8 k 212 68 680 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law When 12 V are applied across a 68 resistor, the current is 8.16 mA 816 mA 17.6 mA 176 mA 8.16 mA 816 mA 17.6 mA 176 mA ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law A current of 200 µA through a 6.8 k resistor produces a voltage drop of 34.4 V 1.36 V 13.6 V 340 V 34.4 V 1.36 V 13.6 V 340 V 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? 14.6 V 82.5 V 8.25 V 146 V 14.6 V 82.5 V 8.25 V 146 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor? 4 k 4 4.4 400 4 k 4 4.4 400 ANSWER DOWNLOAD EXAMIANS APP
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