Three lights are connected in parallel across a 120 volt source. If one light burns out_____________?

Related Mcqs:

1. Three 47 Ω resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately_______________?

   A. 2.3 A
   B. 780 mA
   C. 47 mA
   D. 7.06 A

2. 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___________?

   A. 610 mA
   B. 18 mA
   C. 110 mA
   D. 61 mA

3. 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______________?

   A. 12.5 Ω
   B. 200 Ω
   C. 20 KΩ
   D. 50 Ω

4. Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately___________?

   A. 2.2 A
   B. 137 mA
   C. 1.8 A
   D. 9.09 A

5. The total resistance of a parallel circuit is 50 Ω. If the total current is 120 mA, the current through the 270 Ω that makes up part of the parallel circuit is approximately_______________?

   A. 22 mA
   B. 120 mA
   C. 220 mA
   D. 50 mA

6. If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is_________________?

   A. 50 mA
   B. 70 mA
   C. 120 mA
   D. 40 mA

7. Four resistors of equal value are connected in parallel. If the total voltage is 15 V and the total resistance is 600 Ω, the current through each parallel resistor is____________?

   A. 25 mA
   B. 100 mA
   C. 6.25 mA
   D. 200 mA

8. When an additional resistor is connected across an existing parallel circuit, the total resistance____________?

   A. remains the same
   B. decreases by the value of the added resistor
   C. increases by the value of the added resistor
   D. decreases

9. The following resistors are in parallel across a voltage source: 220Ω , 470Ω , and 560Ω . The resistor with the least current is______________?

   A. 220 Ω
   B. 470 Ω
   C. 560 Ω
   D. impossible to determine without knowing the voltage

10. Four 8 Ω 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_____________?

    A. 18 W
    B. 1.5 W
    C. 48 W
    D. 72 W