In the figure, the section of circuit AB absorbs 60 W of power when a current...

Question

Question

In the figure, the section of circuit AB absorbs 6

In the figure, the section of circuit AB absorbs 60 W of power when a current i = 1.1A passes through it in the indicated direction.

What is the potential difference between A and B?

Emf device C does not have internal resistance. What is its emf?

Answer 1

Answer #1

a)

the potential difference between A and B is v

then ,

Power P=V*i

60=V*1.1

===>

V=54.5 volts

b)

emf=v-i*(R +r)

=54.5-1.1*(2+0) ( internal resistancer r=0 ohms)

=54.5-2.2

=52.3 volt

Answer 2

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