Electronics - Series-Parallel Circuits - Discussion
Discussion Forum : Series-Parallel Circuits - General Questions (Q.No. 8)
8.
With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the current of R2 if R1 is series connected with parallel circuit R2 and R3?
Discussion:
22 comments Page 3 of 3.
Red said:
5 years ago
A store lightning system consists of 25 lamps of 100 watts each connected in parallel with 120 V sources. What is the total resistance of this system?
(1)
Yazan Osrof said:
5 years ago
Total current = 1.4 amp.
R2 parallel with R3 = 10 ohms,
the ratio of V on 10 ohms = 0.667 * 21 = 14 volt ( The voltage is divided by the series resistors )
Then Return the circuit as it was before;
I = V/R.
= 14/R2 = 14/35 =0.4 Amp == 400 m Amp.
R2 parallel with R3 = 10 ohms,
the ratio of V on 10 ohms = 0.667 * 21 = 14 volt ( The voltage is divided by the series resistors )
Then Return the circuit as it was before;
I = V/R.
= 14/R2 = 14/35 =0.4 Amp == 400 m Amp.
(1)
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