Compare the power consumed in the 2 Ohm resistor in each two different circuits.

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Ques. Compare the power used in the 2 ohms resistor in each of the following circuits:
(i) a 6 V battery in series with 1 ohm and 2 ohms resistor, and
(ii) a 4V battery in parallel with 12 ohms and 2 ohms resistors.

Solution:

In order to compare the power that is used in the two combinations, we have:

Potential difference: V1 = 6V, Resistance values, R1 = 1 Ohm, and R2 = 2 Ohm
Potential difference: V2 = 4V, Resistance values, R3 = 12 Ohm, and R4 = 2 Ohm

(i) 6V battery (series combination) with 1 Ohm and 2 Ohms Resistors

As per question, the given values are:

The potential difference of the given battery = 6 V
Resistors connected in Series = 1 Ohm and 2 Ohm

The formula for equivalent resistance in the given series combination is calculated as:

R_eq=R₁+R₂

Here, R₁= 1 Ohm, R₂= 2 Ohm

The equivalent resistance will be,

R = 1 + 2 = 3 Ohm

Now, as per Ohm’s law,

V = IR

Here, I is the current through the circuit

Thus, I = 6/3

⇒ I = 2 A

6V battery in series with 1 and 2 ohm resistors

This is the flow of current via each component of the circuit since there is no division of current in series combination circuits. Therefore, the flow of current through the 2 Ohm resistor equals 2 A.

Power can be expressed by, P= I²R

Thus, P = 2²× 2

⇒ P = 8 W

Thus, the total power consumed by the two resistors will be 8 Watts.

(ii) 4V Battery Parallelly Connected with 12 Ohm and 2 Ohm Resistors

As per question, the given values are:

The potential difference of the given battery, = 4 V
Resistors connected in Parallel = 12 Ohm and 2 Ohm

Note: The voltage across each component in a parallelly connected circuit remains the same. Therefore, the voltage across the 2 Ohm resistor is going to be 4V.
The power used in the 2-ohm resistor is expressed by: P = V²/R

⇒ P = 4²/2

⇒ P = 8 W

Thus, the power consumed by a 2 Ohm resistor in both cases is 8 W.

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Compare the power used in the 2 Ohm resistor in each two different circuits.

Ques. Compare the power used in the 2 ohms resistor in each of the following circuits:
(i) a 6 V battery in series with 1 ohm and 2 ohms resistor, and
(ii) a 4V battery in parallel with 12 ohms and 2 ohms resistors.

Solution:

(i) 6V battery (series combination) with 1 Ohm and 2 Ohms Resistors

(ii) 4V Battery Parallelly Connected with 12 Ohm and 2 Ohm Resistors

Related Questions

CBSE CLASS XII Related Questions

1.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

2.
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 ?

3.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
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 ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

Compare the power used in the 2 Ohm resistor in each two different circuits.

Ques. Compare the power used in the 2 ohms resistor in each of the following circuits: (i) a 6 V battery in series with 1 ohm and 2 ohms resistor, and (ii) a 4V battery in parallel with 12 ohms and 2 ohms resistors.

Solution:

(i) 6V battery (series combination) with 1 Ohm and 2 Ohms Resistors

(ii) 4V Battery Parallelly Connected with 12 Ohm and 2 Ohm Resistors

Related Questions

CBSE CLASS XII Related Questions

1. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

2.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 ?

3.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.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 ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

Ques. Compare the power used in the 2 ohms resistor in each of the following circuits:
(i) a 6 V battery in series with 1 ohm and 2 ohms resistor, and
(ii) a 4V battery in parallel with 12 ohms and 2 ohms resistors.

1.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

2.
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 ?

3.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
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 ?