A circuit consist of two parallel circuit. having a resistance 20ohm and 30ohm respectively connected in series with 15ohm.the current through 15 ohm resistor is 3amps,then find the current through 20ohm and 30ohm resiator respectively.
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EXPLANATION.
A circuit consists of two parallel circuit having resistance 200 and 300.
And are connected in series with 150.
Current through 15Q resistor is 3 ampere.
AS we know that,
For parallel combination.
1/R_[eq) = 1/R, + 1/R2 + 1/R3 t .
Using this formula in the equation, we get.
- 1VR = 1/20 + 1/30.
- 1/R = 3+2/60.
- 1/R' = 5/60.
- 1/R' = /12.
- R= 120.
It is connected in series with 150.
For series combination.
R[eg) = R, + R2 + Ra +..
Using this formula in the equation, we get.
R 12 + 15 270.
AS we know that,
OHM'S LAW.
V= IR.
V=3 x 27.
V= 81 volts.
Current flow through 200.
81= Ix 20.
I= 81/20.
I 4.05 ampere.
Current flow through 300.
V = IR.
81 =Ix 30.
81/30
I= 2.7 ampere.
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