You visited us 3 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Kirchhoff's Junction Law

A storage bat...

Question

A storage battery is connected to a charger for charging with a voltage of $12.5$ Volts. The internal resistance of the storage battery is $1 Ω$ . When the charging current is $0.5$ A, the emf of the storage battery is

13

Volts

No worries! We‘ve got your back. Try BYJU‘S free classes today!

12.5

Volts

No worries! We‘ve got your back. Try BYJU‘S free classes today!

12

Volts

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

11.5

Volts

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $12$ Volts
Resistance of the charger,
$R = \frac{V}{I}$
$R = \frac{12.5}{0.5} = 25 Ω$
Now,
$E = I R = \frac{V}{R + r} (R)$
$E = \frac{12.5}{25 + 1} (25) = (0.48) (25) = 12 V$

Suggest Corrections

Similar questions

A storage battery has e.m.f. $15$ volt and internal resistance $0.05 o h m$ . Its terminal voltage when it is delivering $10$ ampere is:

Q. The battery in the diagram is to be charged by the generator

G

. The generator has a terminal voltage of 120 Volts when the charging current is 10 Amperes. The battery has an emf of 100 Volts and an internal resistance of 1 Ohm. In order to charge the battery at 10 Amperes charging current, the resistance

R

should be set at :

Q. A battery of emf

4

volts and internal resistance

1 Ω

is connected in parallel with another battery of emf

1

volt Combination is used to send current through an external resistance

2 Ω

. Calculate current through external resistance and potential difference across external resistance.

Q. A battery of 20 cells (each having e.m.f. 1.8 volt and internal resistance 0.1 ohm) is charged by 220 volts and the charging current is 15A. The resistance to be put in the circuit is

The emf of a storage battery is 90 V before charging and 100 V after charging by a direct current voltage supply. When charging began the current was 10 A. What is the current at the end of charging if the internal resistance of the storage battery during the whole process of charging may be taken as constant and equal to 2 ohms?

Join BYJU'S Learning Program

A storage battery is connected to a charger for charging with a voltage of 12.5 Volts. The internal resistance of the storage battery is 1Ω. When the charging current is 0.5 A, the emf of the storage battery is

The correct option is B 12 VoltsResistance of the charger,R=VIR=12.50.5=25ΩNow,E=IR=VR+r(R)E=12.525+1(25)=(0.48)(25)=12V

A storage battery is connected to a charger for charging with a voltage of $12.5$ Volts. The internal resistance of the storage battery is $1 Ω$ . When the charging current is $0.5$ A, the emf of the storage battery is

The correct option is B $12$ Volts
Resistance of the charger,
$R = \frac{V}{I}$
$R = \frac{12.5}{0.5} = 25 Ω$
Now,
$E = I R = \frac{V}{R + r} (R)$
$E = \frac{12.5}{25 + 1} (25) = (0.48) (25) = 12 V$