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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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.

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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 ?

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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

2.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.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.

6.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 ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
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.
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.

6.
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 ?