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A resistor of magnitude 45 Omega is conn...

A resistor of magnitude `45 Omega` is connected to an electric cell of emf 12V and of `3 Omega` internal resistance. An ammeter of resistance `4.5 Omega` and a voltmeter of resistance `405 Omega` are properly connected with the resistor.What percentage errors is flowing current and potential difference will occur?

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The correct Answer is:
`zero,10%`
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An electric cell of emf 10 V and of internal resistance 1 Omega is connected in series with the parallel combination of three resistances of 3 Omega,5 Omega and 8 Omega .Calculate the currents through the three resistances.

When a voltmeter of resistance 100 Omega is connected with an electric cell, the reading of the voltmeter is 2V. When the cell is connected with a resistance of 15 Omega . An ammeter of resistance 1 Omega given the reading of 0.1 A.Determine the emf of the cell.

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CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( PROBLEM SET-II)
  1. Two wires are of lengths 1 cm and 2 cm and their diameters are 1 mm an...

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  2. With a series combination of 1 Omega and 2 Omega resistances another s...

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  3. A quadrilateral ABCD is made of conducting wires AB=3 Omega,BC=2 Omega...

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  4. 5A current is divided into three parallel branches in a circuit.The ra...

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  5. An electric cell of emf 10 V and of internal resistance 1 Omega is con...

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  6. Three resistances 8 Omega,20 Omega and 40 Omega are connected in paral...

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  7. An electric cell is sending electric currents through a resistance of ...

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  8. A parallel combination of three resistances of 6 Omega, 12 Omega and 1...

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  9. Three resistances of 4 Omega , 5Omega and 12 Omega are connected in p...

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  10. The resistances of a galvanometer is 200 Omega and full-scale deflecti...

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  11. Current is sent through a galvanometer of resistance 50 Omega from a b...

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  12. A shunt is connected with a galvanometer in such a way that 1/90 part ...

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  13. A resistor of magnitude 45 Omega is connected to an electric cell of e...

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  14. Two resistor of magnitudes 300 Omega and 400 Omega are connected with ...

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  15. A number of cells of negligible resistance are connected with battery ...

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  16. A cell AB of resistance 500 Omega is connected to a battery of emf 12 ...

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  17. A certain circuit with resistance R-100 Omega is powered by a direct c...

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  18. 5 Identical cells are connected in series to form a row, 3 such rows a...

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  19. The emf of a dry cell is 1.5 V , when an ammeter and a resistance are ...

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  20. A series combination of n identical cells has two cells P and Q with r...

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