Page 97 - Basic Electrical Engineering

c.

d. Volt = joules per Coulomb.

5. Which is the following expressions does not represent power?

2
a. I R

b.

c. VI

d. .

6. Which of the following is not the unit of power?

a. Joules/second
b. Watt-hour
c. KW
d. Volt-Ampere

7. A conductor of length ℓ and diameter d has resistance of R ohms. If the diameter is reduced to
one-third and length increased by three times, the resistance of the conductor will be

a. 3 R
b. 6 R
c. 9 R
d. 27 R.

8. Which of the following expressions is incorrect?

a.

b.

c.