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? 900 mV 18 V 0 V 9 V 900 mV 18 V 0 V 9 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? 820 8.2 k 82 8.2 820 8.2 k 82 8.2 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law When 12 V are applied across a 68 resistor, the current is 176 mA 816 mA 17.6 mA 8.16 mA 176 mA 816 mA 17.6 mA 8.16 mA ANSWER DOWNLOAD EXAMIANS APP
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 When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is 100 V 14.4 V 1.4 V 10 V 100 V 14.4 V 1.4 V 10 V 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. 2 4 40 20 2 4 40 20 ANSWER DOWNLOAD EXAMIANS APP
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