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 Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance? 5.9 mA 27.2 mA 59 mA 590 mA 5.9 mA 27.2 mA 59 mA 590 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? 146 V 82.5 V 8.25 V 14.6 V 146 V 82.5 V 8.25 V 14.6 V 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 8 V 96 V 9.6 V 960 V 8 V 96 V 9.6 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law The formula to find I when the values of V and R are known is I = V/R V = IR I = R/V I = VR I = V/R V = IR I = R/V I = VR ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law What is the voltage source for a circuit carrying 2 A of current through a 36 resistor? 1.8 V 72 V 7.2 V 18 V 1.8 V 72 V 7.2 V 18 V ANSWER DOWNLOAD EXAMIANS APP
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