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3. The four resistances in the circuit below are R1 = 22, R2 = 30, R3 = 51 and R4 = 42. The power source has a potential diff

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(a) R and Ry resistons are connected in parallel so the equivalent nesistence of them R = R3x Ry Ratky 5X4 5+4 = 2.2212 cincP2 Power delirend to Re resiston is IPRA (1-25) x 3 P2 = 4.7 W Power delivend to R nesiston is 2 let Iz R3 (8.56)2x5 P3 =1057

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