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 20 2 40 4 20 2 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? 59 mA 5.9 mA 27.2 mA 590 mA 59 mA 5.9 mA 27.2 mA 590 mA 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 k 8.2 820 82 8.2 k 8.2 820 82 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? 4.4 4 4 k 400 4.4 4 4 k 400 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law When 12 V are applied across a 68 resistor, the current is 816 mA 17.6 mA 8.16 mA 176 mA 816 mA 17.6 mA 8.16 mA 176 mA 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 82.5 V 146 V 8.25 V 14.6 V 82.5 V 146 V ANSWER DOWNLOAD EXAMIANS APP
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