Question

When a 1.50V battery is shorted by a copper wire whose resistance can be ignored, the current through the copper wire is 2.75 A. What is the internal resistance of the battery?

Answer 1

Answer:

Internal resistance = 0.545 ohm

Explanation:

As per ohm's law we know that

$V = iR$

here we know that

i = electric current = 2.75 A

V = potential difference = 1.50 Volts

now from above equation we have

$1.50 = 2.75 ( R)$

now we have

$R = \frac{1.50}{2.75}$

$R = 0.545 ohm$