The voltage required to charge a battery with an electromotive force (emf) of 24 V and an internal resistance of 0.25 ohms at a charging current of 24 A is calculated using the formula V = emf + Ir. Substituting the values, V = 24 + (24)(0.25) results in a terminal voltage of 30 V. This calculation confirms that the voltage needed to charge the battery is indeed 30 V.
PREREQUISITESStudents in electrical engineering, hobbyists working with batteries, and anyone interested in understanding battery charging dynamics.
Yes.Jabababa said:Homework Statement
A battery has an emf of 24 V and an internal resistance of 0.25 ohm is being charged at a rate of 24 A. What is the voltage required to do this?
Homework Equations
V(terminal) = emf +/- Ir
The Attempt at a Solution
Since the battery is getting charged that means we use the V= emf + Ir
V = 24 + (24)(0.25) = 30V
Is this correct?