Problem 21.43
A circuit consists of a 12.0-V battery connected to three resistors (43? , 18? and 110? ) in series.
Part A
Find the current that flows through the battery.
Express your answer using two significant figures.
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I = | mA |
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Part B
Find the potential difference across the 43? resistor.
Express your answer using two significant figures.
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V1 = | V |
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Part C
Find the potential difference across the 18? resistor.
Express your answer using two significant figures.
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V2 = | V |
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Part D
Find the potential difference across the 110? resistor.
Express your answer using two significant figures.
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V3 = | V |
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A)
I=V/(R1+R2+R3)
=12/(43+18+110)
=0.07 A
B)
V1= I*R1
= 0.07 * 43
= 3.01 V
C)
V2= I*R2
= 0.07 * 18
= 1.26 V
D)
V3= I*R3
= 0.07 * 110
= 7.7 V
A)current that flows through the battery I=V/Reff
Reff=R1+R2+R3
I=12/(43+18+110)=70 mA
B)potential difference across the 43 V43=I*43=70*10^-3*43=3.0V
C)potential difference across the 18 V18=I*18=70*10^-3*18=1.3V
D)potential difference across the 110 V110=I*110=70*10^-3*110=7.7V
Problem 21.43 A circuit consists of a 12.0-V battery connected to three resistors (43? , 18?...
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