In the circuit as shown in the figure the value of resistance R is:1).22Omega 2)21Omega 3)25Omega 4)16Omega
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Given : Voltage source of 24V
Current flowing from voltage source = 1 A
To Find : Resistance R
Solution:
Voltage = 24V
Current = 1 A
Resistance = Voltage / Current
=> Resistance = 24/1 = 24 Ω
R is connected in series with 3 Resistance of 9 Ω connected in parallel
Hence total Resistance - R + 1/(1/9 + 1/9 + 1/9)
=> 24 = R + 9 /3
=> 24 = R + 3
=> R = 21
Hence Value of Resistance R is 21 Ω
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