A supply of 24 V DC is applied across a circuit which consist of three resistors connected in parallel R1= 1.2KΩ, R2= 560 Ω, R3= 2.1Ω and a fourth resistor of 7.8 Ω connected in series with the parallel group. Determine the current, voltage and power across each resistor

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1 Answer

Answer :

Req= (1/1200 +1/560 + 1/2.1)^-1

       = 2.1 ohms

RT= 2.1 + 7.8

     = 9.9 ohms

IT = V/R = 24/9.9

               = 2.4 A

Veq= R×I =  2.1×2.4       V4 = R×I = 7.8 × 2.4

                 = 5.04V                           = 18.72V

PT = I^2 ×R = 2.4^2 × 9.9

                     = 57.0.24 w

Peq = 2.4^2 × 2.1        P4 = 2.4^2 × 7.8

        = 12.096 w                 = 44.928 w

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Ellis-Junior Kamatjipose

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