Question

The storage battery of a car has emf of 12v . if the internal resistance of battery is 0.4ω, what is the maximum current that can be drawn from the battery .

Answer 1

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    

Answer 2

★ Given that:-

→ E = 12 V

→ R = 0.4 Ω

★ To find:-

→ I = ?

★ According to Ohm’s law,

→ E = IR

★ Now, we get:-

$I = \frac{E}{R}$

★ By substituting, we get:-

$I = \frac{12}{0.4} = 30A$

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