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 2 of 4.
Megharaj said:
8 years ago
How to calculate sqrt (7/8) /1200 without calculator? Anybody, please tell me.
Susanta said:
9 years ago
When power are series it calculate as equivalent capacitance.
Jagan said:
9 years ago
Actually, the parallel circuit formula is 1/p.
Ankur said:
9 years ago
@Riya.
sqrt means square root.
sqrt means square root.
Riya said:
9 years ago
@All.
What does sqrt mean?
What does sqrt mean?
Rishika said:
9 years ago
I don't know how to calculate in calculator can anyone help us who are having trouble about this, please.
Vishal said:
9 years ago
Same doubt for me also, anybody tell me please.
PAVAN said:
9 years ago
Yes @Punith, same doubt for me.
How to calculate the square root value without a calculator?
How to calculate the square root value without a calculator?
Veena said:
9 years ago
Nice @Punith asked the good question because in competitive examination calculator is not allowed. So anyone will explain how to calculate square roots without calculator?
Punith said:
9 years ago
How to calculate sqrt (7/8)/1200 without calculator anybody please?
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