Question

1. a laptop’s power cord has a transformer, a device for converting from one kind of electricity to another, included as part of the white box shown below. to what might this transformer be converting the wall outlet’s electricity? options: 16v dc, 120v ac

Explanation:

Wall outlets typically provide 120V AC (alternating current). Laptops use direct current (DC), and the transformer in the power cord converts AC to DC and also steps down the voltage. The options are 16V DC (which is a common laptop input voltage) and 120V AC (the wall voltage, not what the transformer converts to for the laptop). So the transformer converts 120V AC to 16V DC.

Answer:

16V DC