Question

Calculate the current through 2Ω resistor when voltage across it is 10 volt. * 5Ω 5 A 20 A 15 C

Answer 1

Answer:

In the figure R=external resistance ,r= internal resistance of the cell and ϵ= EMF of the cell

using Kirchhoff's law we can write the following equation ϵ−IR−Ir=0

now from the question we can write the following equations

ϵ−2×0.5−0.5r=0⇒ϵ=

2

2+r

...(1)

ϵ−5×0.25−0.25r=0...(2)

using eq(1) in eq(2) we get value of r=1Ω

now using this in eq (1) we get value of ϵ=

2

3

=1.5V

solution

Explanation:

hope it helps you