Problem 11: A battery of 24V is connected to
a 10Ω load and a current of 2.2A flows. Find the internal resistance of
the battery and its terminal voltage.
Solution:
Step: 1 Overview
See the overview of problem 10.
Step: 2 Calculation
Given:I=2.2ARequired:
E=24V
R=10Ω
V=?Solution:
r=?
We know that,
V=IR
V=(2.2)(10)
V=22V
We know that during discharging a battery:
V=E-Ir
Ir=E-V
r=(E-V)/I
r=(24-22)/2.2
r=2/2.2
r=0.91Ω
V=22V, and r=0.91Ω (Ans)
