Ohm's Law If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is 2.2 k 22 k 220 k 220 2.2 k 22 k 220 k 220 ANSWER DOWNLOAD EXAMIANS APP
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 When 12 V are applied across a 68 resistor, the current is 17.6 mA 176 mA 816 mA 8.16 mA 17.6 mA 176 mA 816 mA 8.16 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 38.5 3.1 31 385 38.5 3.1 31 385 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed? 18 V 9 V 0 V 900 mV 18 V 9 V 0 V 900 mV 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? 8.2 820 82 8.2 k 8.2 820 82 8.2 k ANSWER DOWNLOAD EXAMIANS APP
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