12A
YOUR ANSWER: (A) P = 50,000 watts. (b) P = 1,000,000 watts.
Wrong. But let's see why you are wrong.
First, you did not use the correct formula. With voltage and resistance known, we use
the formula P = E2, not P = E, which you used in both problems.
R
R
Problem (A)
P = E2
R
P = 5 x 50
1000
P = 2500
1000
P= ?
P = E2
R
Problem (B)
P = E2
R
P = 100 x 100
10,000
P = 10,000
10,000
P=
Complete these problems; then continue on to frame 16A.
12B
YOUR ANSWER: (a) 93.25 watts. (b) .11 horsepower.
You are not correct.
First of all, P = E x I, not P = E
I
You have solved for horsepower correctly; however, let's try again.
a. P=E x l
b. P - 373 x 4 = ? watts
c. HP = ?
watts
=
hp.
746 (watts/hp)
After solving this problem correctly, continue on to frame 17A.
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IT0348
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