The total resistance of a parallel circuit is 50 . If the total current is 120 mA, the current through the 270 resistor that makes up part of the parallel circuit is approximately 50 mA 220 mA 120 mA 22 mA TRUE ANSWER : ? YOUR ANSWER : ?
A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 k. The current through each bulb is approximately 110 mA 610 mA 18 mA 61 mA TRUE ANSWER : ? YOUR ANSWER : ?
Four equal-value resistors are connected in parallel. Ten volts are applied across the parallel circuit and 2 mA are measured from the source. The value of each resistor is 200 50 20 K 12.5 TRUE ANSWER : ? YOUR ANSWER : ?
If one of the resistors in a parallel circuit is removed, the total resistance decreases increases remains the same doubles TRUE ANSWER : ? YOUR ANSWER : ?
Six resistors are in parallel. The two lowest-value resistors are both 1.2 k. The total resistance is less than 6 k is less than 600 is less than 1.2 k is greater than 1.2 k TRUE ANSWER : ? YOUR ANSWER : ?
Four resistors are connected in parallel. Fifteen mA flows through resistor R. If the second resistor is 2R, the third resistor 3R, and the fourth resistor 4R, the total current in the circuit is 60 mA 15 mA 135 mA 31.25 mA TRUE ANSWER : ? YOUR ANSWER : ?
When an additional resistor is connected across an existing parallel circuit, the total resistance decreases remains the same decreases by the value of the added resistor increases by the value of the added resistor TRUE ANSWER : ? YOUR ANSWER : ?
A sudden increase in the total current into a parallel circuit may indicate a drop in source voltage an increase in source voltage either a drop in source voltage or an open resistor an open resistor TRUE ANSWER : ? YOUR ANSWER : ?
Four 8 speakers are connected in parallel to the output of an audio amplifier. If the maximum voltage to the speakers is 12 V, the amplifier must be able to deliver to the speakers 48 W 72 W 1.5 W 18 W TRUE ANSWER : ? YOUR ANSWER : ?
The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is 7 A the larger of the two 1 A unknown TRUE ANSWER : ? YOUR ANSWER : ?