Question

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

Answer 1

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,

E = Ir

I = E / r

= 12 / 0.4

= 30 A

The maximum current drawn from the given battery is 30 A.

Next Question

Answer 2

Answer:

Answer: E = 12v

Internal resistance r = 0.4 ohm Now maximum current that can be drawn from the battery = I

Now applying ohms law E = Ir

I =E/r = 12/0.4 = 30A