NCERT Class 10 Science Activity 12.6 Solution Electricity | Activity 12.6 Class 10 Science Electricity

 NCERT Class 10 Science Activity 12.6 Solution Electricity | Activity 12.6 Class 10 Science Electricity

In this article, we will discuss activity 12.6 class 10 science. You will find a complete explanation with a conclusion.

After studying this activity 12.6 Class 10 Science Electricity, you will be able to solve Questions of Chapter 12 Electricity.

 

 

Activity 12.6 Class 10 Science

    ·     Make a parallel combination, XY, of three resistors having resistances R₁, R_2, and R₃ respectively. Connect it with a battery, a plug key, and an ammeter. Also, connect a voltmeter in parallel with the combination of resistors.

   ·     Plug the key and note the ammeter reading. Let the current be I. also take the voltmeter reading. It gives the potential V  across the combination. The potential differences across each resistor are also v. this can be checked by connecting the voltmeter across each individual resistor.

      

    ·     Take out the plug from the key. Remove the ammeter and voltmeter from the circuit. Insert the ammeter in series with the resistor R₁. Note the ammeter reading I₁.

     

    ·     Similarly, measure the currents through R₂ and R₃. Let these be I₂ and I₃ respectively. What is the relationship between I, I₁, I₂, and I_3.

     Observation Activity 12.6 Class 10 Science

 

The total current I is equal to the sum of the current through each branch of the combination.

I= I₁ +I₂ +I₃    (i)

The potential difference across each resistor is same.

Explanation Activity 12.6 Class 10 Science

 

The equivalent resistance of the parallel combination of resistors is R_p.

According to Ohm’s law

`I=frac{V}{R_P}`

So for each resistor

`I_1=frac{V}{R_1}`

`I_2=frac{V}{R_2}`

and

`I_3=frac{V}{R_3}`

From the equation (i)

`frac{V}{R_P}=frac{V}{R_1} + frac{V}{R_2} + frac{V}{R_3}`

 `frac{1}{R_P}V=V(frac{1}{R_1} + frac{1}{R_2} + frac{1}{R_3})`

 `frac{1}{R_P}=frac{1}{R_1} + frac{1}{R_2} + frac{1}{R_3}`

Conclusion Activity 12.6 Class 10 Science

 

 When a number of resistors are connected in parallel then the total current in the circuit is divided into different resistors while the potential difference remains the same.

Total current 

I= I₁ +I₂ +I₃    

  

Related Topic for you

1. First  Activity-  Activity 12.1 Class 10 Science

2. Previous Activity -  Activity 12.5 Class  10 Science

3. Solution of Chapter 12 Electricity

4. Extra Questions of Chapter 12 Electricity

5. MCQ Questions of Chapter 12 Electricity