Four cells of emf 'E' are joined in parallel to form a battery. The equivalent emf of battery will be

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When four cells of EMF 'E' are connected in parallel, the total EMF of the battery will still be 'E'. This is because when cells are connected in parallel, the positive terminals are connected to each other and the negative terminals are also connected to each other.

The potential difference between the positive and negative terminals of each individual cell is 'E'. When they are connected in parallel, the potential difference between the positive and negative terminals of the entire battery is still 'E'.

Therefore, the equivalent EMF of the battery will be 'E'. However, the internal resistance of the battery will be lower when cells are connected in parallel, which will result in a higher current output.

Also check:

Relevant Concepts
Ohm’s Law And Its Limitations	Ampere	Circuit Diagram
Kirchhoff’s Rules	Wheatstone Bridge	Meter Bridge
Difference between EMF and Voltage	Resistor Colour Codes	Resistors in Series and Parallel Combination
Differences Between Acceleration and Velocity	Electrical Formulas	Resistance Formula

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Four cells of emf 'E' are joined in parallel to form a battery. The equivalent emf of battery will be

CBSE CLASS XII Related Questions

1.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

3.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

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Four cells of emf 'E' are joined in parallel to form a battery. The equivalent emf of battery will be

CBSE CLASS XII Related Questions

1.A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

3.Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

3.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?