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 2 40 20 4 2 40 20 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law A current of 200 µA through a 6.8 k resistor produces a voltage drop of 340 V 1.36 V 34.4 V 13.6 V 340 V 1.36 V 34.4 V 13.6 V 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 14.4 V 100 V 1.4 V 10 V 14.4 V 100 V 1.4 V 10 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately 112 1.2 11.2 18 112 1.2 11.2 18 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law How much voltage is needed to produce 2.5 A of current through a 200 resistor? 500 V 80 V 8 V 50 V 500 V 80 V 8 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law The formula to find I when the values of V and R are known is V = IR I = R/V I = VR I = V/R V = IR I = R/V I = VR I = V/R ANSWER DOWNLOAD EXAMIANS APP
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