Question

The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is
0.4Ω, what is the maximum current that can be drawn from
from the battery?​

Answer 1

Answer:

Emf of the battery, E = 12 V · Internal resistance of the battery, r = 0.4 Ω · Maximum current drawn from the battery = I · According to Ohm's law,.

Answer 2

AnSwer :

Emf of the battery, E = 12v

Internal resistance of battery, r = 0.4Ω.

Maximum current drawn from the battery = I

According to ohm's law,

The electric current passing through a conductor is directly proportional to current and resistance

• E = Ir

here,

E denotes Emf

I denotes current

r denotes resistance

Substituting all the given values in the formula,

➠ E = Ir

➠ 12 = (I)(0.4)

➠ I = 12/0.4

➠ I = 30A${.}$

thus, the maximum current drawn from the given battery is 30A.