Electrical Engineering - Series Circuits - Discussion
Discussion Forum : Series Circuits - General Questions (Q.No. 4)
4.
A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 
. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is
. If each resistor is operating in the circuit at its maximum power dissipation, total current flow isAnswer: Option
Explanation:
Total P = P1 + P2 + P3 = 7/8w.
P = I2R.
I = sqrt (P/R)
Now, P = 7/8w, R = 1200 ohm.
Therefore,
I= sqrt ( (7/8)/1200 ) = 0.0270030862 = 27 mA.
Discussion:
32 comments Page 4 of 4.
Katta said:
1 decade ago
Nice explanation.
Parashakthi p r said:
1 decade ago
P=I2R
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