6A

YOUR ANSWER: The watt, then, is the time rate for consuming electrical energy.

You are correct, as far as you have gone. But you seem to have forgotten one very

important point. Before energy can be consumed, work must be done.

Now, go back to frame 3A and select the more correct answer.

6B

YOUR ANSWER: 12 watts

No.

The formula for power is P = E x I, NOT P = I x R.

Once more, electrical power is the time rate at which charge is forced to move by

voltage. This is why the power in watts is equal to the product of volts and amperes. The

basic power formula is P - E x I.

Let's return to frame 2A and solve for the correct answer.

6C

YOUR ANSWER: 100 watts.

Wrong.

With the formula written right on the problem page, you still won't use it. Come on now,

let's get down to the business at hand. P = E x I, not P = IR. Get this formula straight in your

mind; you will be using it for a long time to come.

Now, let's go back to frame 7A and solve the problem correctly.

1-7

IT0348

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