17A

YOUR ANSWER: (a) 1492 watts.

(b) 2 horsepower.

You are correct.

Remember always to use the formula provided, and you can't go wrong.

Let's review our study of electrical power.

1. The unit of measurement for power consumed in a circuit is the

________________.

ANSWERS

1. watt

2.

The basic power formula is P = ______ x ______.

2. P = E x l

3.

P = E x I is the basic formula for _____________.

3. power

4.

With current and resistance known in a circuit, power consumption

can be found by using the formula P = ______.

4. P = I 2 R

5.

With voltage and resistance known in a circuit, power consumption

can be found by using the formula P = _______.

5. P = E 2 R

6.

One horsepower is equal to _______________ watts.

6. 746

7.

746 watts is equal to one ______________.

7. horsepower

8.

Power is the ___________ rate for consuming energy.

8. time

9.

Power is the product of voltage and _________ , and its unit of

measurement is the _______________.

9. current, watt

10. The power formula can be written in several separate forms.

Underline the form in which it cannot be written.

a. P= El b. P=E2 c. P= IR d. P= I2R

R

10. P=IR

Continue on to frame 19A.

IT0348

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