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? 0 V 900 mV 18 V 9 V 0 V 900 mV 18 V 9 V ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source? 23 230 97 9.7 23 230 97 9.7 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 18 11.2 112 1.2 18 11.2 112 1.2 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 k 4 400 4.4 4 k 4 400 4.4 ANSWER DOWNLOAD EXAMIANS APP
Ohm's Law Approximately how much current flows through a 3.3 M resistor across a 30 V source? 9 A 900 A 90 A 9000 A 9 A 900 A 90 A 9000 A 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 385 31 38.5 3.1 385 31 38.5 3.1 ANSWER DOWNLOAD EXAMIANS APP
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