A simplified electrical circuit for a home is shown in the figure. (Figure 1) Pa

Question

A simplified electrical circuit for a home is shown in the figure. (Figure 1)

Part A

Determine the currents through the circuit breaker.

Express your answer to two significant figures and include the appropriate units.

Part B

Determine the currents through the lightbulb.

Express your answer to two significant figures and include the appropriate units.

Part C

Determine the currents through the microwave oven.

Express your answer to two significant figures and include the appropriate units.

Part D

Determine the currents through the toaster.

Express your answer to two significant figures and include the appropriate units.

Part E

Determine the electric power used by the lightbulb.

Express your answer to two significant figures and include the appropriate units.

Part F

Determine the electric power used by the microwave oven..

Express your answer to two significant figures and include the appropriate units.

Part G

Determine the electric power used by the toaster.

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

Req = 1 + (20 II 16 II 20)

= 1 + (10 II 16)
=7.154 ohm

A) I = V/Req = 120/7.154 A = 16.77 A

B) V' = V - I*R

=120 - 16.77*1 = 103.226V

current through bulb = 103.226/20 = 5.16A

C) current through oven = 103.226/16 =6.45A

D) current through Toaster = 103.226/20 = 5.16A

E)Power used by bulb = I^2*R = (5.16)^2*20 =532.78 W

F) Power used by oven = (6.45)^16 =665.64W

G)Power used by toaster = (5.16)^2*20 = 532.78W

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