In Fig 27-52, circuit section AB absorbs energy at a rate of 50W when current i=2.0A through it is in the indicated direction. Resistance R=2.0 Omega, (a) What is the potential difference between A and B? Emf device X lacks internal resistance. (b) What is its emf? (c) is pont B connected the positive terminal of X or to the negative terminat?

In Fig 27-52, circuit section AB absorbs energy at a rate of 50W when

1.	In Fig 27-52, circuit section AB absorbs energy at a rate of 50W when current i=2.0A through it is in the indicated direction. Resistance R=2.0 Omega, (a) What is the potential difference between A and B? Emf device X lacks internal resistance. (b) What is its emf? (c) is pont B connected the positive terminal of X or to the negative terminat?
Answer» Answer :(a) 25V; (b) 21 V; (c) The negative terminal is at B

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