Series and Parallel Circuits -Sulmi 1. An outlet in your house supplies a consta

Question

Series and Parallel Circuits -Sulmi 1. An outlet in your house supplies a constant 120 V. In your basement, you T in a specific circuit reaches a certain level (usually 15 or 20 switches called circuit breakers that automatically open when the amount have of CURREN amperes). Are appliances, like your refrigerator and stove, in your house connected in series or in parallel? (Hint: try simulating this with light bulbs) Give at least two different reasons why your answer must be true. Use the circuit in the diagram below to answer questions 2a and 2b 2a. Explain, succinctly, why the current through Ri increases whern the switch is closed. R, R2 R3 2b. Calculate the current through the battery with the switch closed given the following values for the resistors: R1-50 , R2=100 and R,-150. Show all your work. Use the back of this page if necessary.

Explanation / Answer

According to the concept of the current electricity

1. The house hold circuit are connected to parallel because

If one instrument is damaged other instruments are in working condition

If they are in series one instrument is damaged other instruments are also not work

2 In the parallel connection power loss is low

In the series connection power loss is high

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(2) ans

(a)

In the circuit switch is closed

The current in the resistance R1 increases because the resistance R2 and R3 share the current passing from resistance R1

(b)

Here the resistance R2 and R3 are parallel connection

R=100*150/100+150=15000/250=60 ohm

Resistance R and R1 are series connection

The equivalent resistance Req=50+60=110 ohm

Now we find the current through the battery

Current i=6/150=0.04 A

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