With same emf of 10 𝑉, a combination of two batteries with different internal resistances of 20 ohm and 5 ohm, is attached to parallel combination of 30 ohm and 𝑅 ohm.

As per the given question, the following can be represented:

The emf of two batteries = 10 V
Internal resistances of Two batteries = 20 Ω and 5 Ω
Parallel combination = 30 Ω and R Ω.
Voltage Difference across the battery of internal resistance 20 Ω = zero

Parallel Combination of Resistors

Parallel Combination of Resistors

Now, in order to determine the value of R:

E₁ = E – ir

E₂ = E – ir

= 10 – i20 = 0

= 10 – 0.5 × 5

i = 0.5 A

= 7.5 V

Thus,

E_net = E₁ + E₂ = 7.5 V

⇒ i = i₁ + i₂

⇒ 0.5 = (7.5/x) + (7.5/30)

⇒ R = 30 Ω

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With same emf of 10 V, a combination of two batteries with different internal resistances of 20 ohm and 5 ohm, is attached to parallel combination of 30 ohm and R ohm. Find value of R.

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Write two advantages of reflecting telescope over refracting telescope.

3.
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 ?

4.
If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

5.
Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.

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With same emf of 10 V, a combination of two batteries with different internal resistances of 20 ohm and 5 ohm, is attached to parallel combination of 30 ohm and R ohm. Find value of R.

Related Questions

CBSE CLASS XII Related Questions

1.Write two advantages of reflecting telescope over refracting telescope.

3.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 ?

4.If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

5.Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Write two advantages of reflecting telescope over refracting telescope.

3.
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 ?

4.
If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

5.
Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.