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
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text: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
Expert Solution

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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