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(a) With the help of a diagram, derive t...

(a) With the help of a diagram, derive the formula for the resultant resistance of these resistors connected in series.
(b) For the circuit shown in the diagram given below:

Calculate:
(i) the value of current each resistor.
(ii) the total current in the circuit.
(iii) the total effective resistance of the circuit.

Text Solution

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The correct Answer is:
(b) (i) Current through `5Omega` resistor `= 1.2A`; Current through `10 Omega` resistor `= 0.6A`; Current through `30 Omega` resistor `= 0.2A` (ii) 2A (iii) `3Omega`
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. A 4Omega coil and a 2Omega coil are connected in parallel. What is the...

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  2. (a) With the help of a circuit diagram, deduce the equivalent resistan...

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  3. (a) With the help of a diagram, derive the formula for the resultant r...

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  4. (a) With the help of a circuit diagram, obtain the relation for the eq...

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  5. (a) Explain with the help of a labelled circuit diagram, how you will ...

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  6. The figure given below shows three resistors: Their combined resi...

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  7. If two resistors of 25 Omega and 15 Omega are joined together in serie...

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  8. The diagram below shows part of a circuit: If this arrangement of...

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  9. In the circuit shown below: The potential difference across the 3...

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  10. A battery and three lamps are connected as shown: Which of the fo...

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  11. V(1),V(2) and V(3) are the p.ds. across the 1Omega, 2Omega and 3Omega ...

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  12. A wire of resistance R(1) is cur into five equal pieces. These five pi...

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  13. Show with the help of diagrams, how you would connet three resistors e...

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  14. Two resistances when connected in parallel give resultant value of 2 o...

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  15. A resistor of 8 ohms is connected in parallel with another resistor X....

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  16. You are given three resistances of 1,2 and 3 ohms. Show by diagrams, h...

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  17. How will you connect three resistors of 2Omega, 3Omega and 5Omega resp...

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  18. How will you connect three resistors of 2Omega, 3Omega and 6Omega to o...

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  19. What is : (a) the highest (b) the lowest total resistances that can b...

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  20. What is the resistance between A and B in the figure given below?

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