In the figure, R, = 48 2, wiwwwn w 24a are R, Rz R3 R, = 72 o and R3 = 24 a are connected across points "a" and "b". A potential difference V = 432 volts is applied across the system . What is the power dissipation in resistor R,? (in watts) %3D %3D
In the figure, R, = 48 2, wiwwwn w 24a are R, Rz R3 R, = 72 o and R3 = 24 a are connected across points "a" and "b". A potential difference V = 432 volts is applied across the system . What is the power dissipation in resistor R,? (in watts) %3D %3D
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter29: Direct Current (dc) Circuits
Section: Chapter Questions
Problem 76PQ
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Step 1
The three resistors are connected in series,
Equivalent resistance = R1+R2+R3 = 48+72+24 = 144 Ohms
Potential Difference = 432 Volts
If resistors are connected in series , current through them will remain the same.
Current is common for all the resistors connected in series.
Let I be the current in the circuit
we have ,
V eq = I* Req
I = 432/144 = 3 A
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