Question
Asked Nov 7, 2019
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Ch 20, problem 81

Find the magnitude of the current in the 2.0-Ω resistor in the drawing.

1.0
1.0 V
2.0
w
4.0 V
3.0
ww
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1.0 1.0 V 2.0 w 4.0 V 3.0 ww

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Expert Answer

Step 1

Let the current flowing through the 2Ω resistor be designated as i1 and the current flowing through the 3 Ω resistor be designated as i2.

Use the Kirchhoff’s voltage law in the loop 1 and 2 as mentioned in the figure below and write the corresponding voltage expressions for the loops as,

 

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12-i 1OV 2.02 wwws + 2 12 40V 3.00

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Step 2

For loop 1:

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1-2.0i+1.0(ii) 0

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Step 3

For loop ...

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4+1-2.03.02 = 0

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Current Electricity

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