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[" 29.In figure,circuit section "AB" abs...

[" 29.In figure,circuit section "AB" absorbs energy at the rate of "5.0" W when a current "i=1.0" A passes through it "],[" in the indicated direction."],[qquad (min)/(A)(1)/(R=2.0Omega)*(1)/(E)*(pi)/(B)],[" (a) What is the potential difference between points "A" and "B?],[" (b) Emf device "X" does not have internal resistance.What is its emf? "],[" (c) What is its polarity (the orientation of its positive and negative terminals)? "]

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