You drop your boom box and one of the two wires that connects the batteries to the electronics is severed. While you might hope that the device would continue working at half its normal volume, you find that it does not work at all. This is because both wires are necessary for the boom box to operate. One wire carries
A) current to the electronics and the other wire returns that current to the batteries.
B) electric current to the electronics while the other wire carries magnetic poles to the speakers.
C) electric fields to the electronics and the other wire carries magnetic fields to the electronics.
D) current to the amplifier while the other wire carries current to the speakers.

Question

Quizplus · Accepted Answer

In a circuit, one wire is needed to carry the current to the device (in this case, the electronics of the boom box), and the other wire is necessary to complete the circuit by returning the current back to the battery. This completes the electrical circuit, allowing the device to function.

You Drop Your Boom Box and One of the Two