Ohm's Law How much voltage is needed to produce 2.5 A of current through a 200 resistor? 8 V 50 V 80 V 500 V 8 V 50 V 80 V 500 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 4 k 400 4.4 4 4 k 400 4.4 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 20 40 2 4 20 40 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 31 38.5 385 3.1 31 38.5 385 3.1 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce? 960 V 9.6 V 96 V 8 V 960 V 9.6 V 96 V 8 V 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? 900 mV 0 V 9 V 18 V 900 mV 0 V 9 V 18 V ANSWER DOWNLOAD EXAMIANS APP
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