Question

H

1.

Calculate equivalent resistance for R1 and R2 and total resistance for the entire circuit.

 2.

Calculate equivalent resistance for R1 and R2 and total resistance for the entire circuit.

R1,R2 equivalent resistance = ____________ Ω Total resistance = ____________ Ω

+ _

R1 20Ω R3 10Ω

R2 30Ω

 3.

Five (5) identical resistors connected in parallel across a 230 V source for a large motor. The instruction manual states that the entire circuit requires 350 watts. What should be the value of each of the resistors:

A. 30 ohms

B. 151 ohms

C. 327 ohms

D. 755 ohms

R1,R2 equivalent resistance = ____________ Ω Total resistance = ____________ Ω

+ _

R1 30Ω

R2 10Ω

R3 20Ω

 4. The resistance across AB is

  A. 4Ω B. 1Ω C. 2Ω D. 0.5Ω

5. A series/parallel circuit is represented by illustration _______. A. 1

B. 2 C. 3

6. Three resistors 2 Ω, 3 Ω and 4 Ω are connected so that the equivalent resistance is 9 Ω. The resistors are connected _________.

a. all in series

b. all in parallel

c. 2 Ω and 3 Ω in parallel and the combination in series with 4 Ω

d. 2 Ω and 3 Ω in series and the combination in parallel to 4 Ω

7. The rate at which work is done is called ___________ .

8. The basic formulas for power in a DC circuit are:

P = I x __ , P = I2 x __ , P = __ R