Question
Asked Nov 23, 2019
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Two 3V batteries are connected in parallel to a 10 ohm resistor, where one of the batteries has double the internal resistance. Estimate the power delivered by each battery.

 
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Expert Answer

Step 1

Drawing the circuit diagram for the given points.

The internal resistance of the battery is connected in series with the voltage.

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E 102 E 3v 3V 2 =21 E E, = 3V + L tw

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Step 2

Applying nodal analysis in the above circuit:

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Е -3 Е-3 Е 0 10 Е -3 Е-3 Е =0 10 21 10Е - 30+ 5E -15+ E* 0 = 10r 15E Er 45= 0 Е(15+г) -45 45 Е- 15

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Step 3

Evaluating the current in each battery branch to calculate the power delivered by the battery.

The currents are in negative direction, which m...

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Е-3 45 15 r 45-45-3r 15r -31 15r -3 15 r Similarly Е -3 Е -3 = . -3 2(15+r Il

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