- #1
trollcast
Gold Member
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- 13
Homework Statement
Circuit as shown below.
At what voltage of E does the battery begin to charge?
What percentage of the power is delivered to the 1R resistor by the voltage supply E when the charging current is zero?
What is the current through the battery when E = 20V?
Homework Equations
The Attempt at a Solution
I'm really not sure how to start with this one as there's nothing like this in the class notes as its an extension exercise the teacher set.
I assume for the first part E obviously must be greater than 12V so I need to work out the effect of the resistors in the circuit?