A battery has an internal resistance of and is connected to a external resistor

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

12\,\text{V}

battery has an internal resistance of

0.5\,\Omega

and is connected to a

5.5\,\Omega

external resistor. An ammeter of resistance

0.1\,\Omega

is inserted in series to measure the current. By what approximate percentage does the current decrease due to the presence of the ammeter? (a)

3.0\%

(b)

16\%

(c)

1.6\%

(d)

1.8\%