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Current Electricity Quiz 2

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10 Question

Popular Questions In Current Electricity Quiz 2

  • A potentiometer wire has a length 5m and its resistance of 20Ω.20\Omega. it is connected in series with a resistance of 1000Ω1000\Omega and a cell of emf 2V. The potential gradiant along the wire is :

  • A potentiometer wire, having a resistance of 5 Ω\Omega and length 10 m, is connected in series a cell of emf 5 V and an external resistance of 495 Ω\Omega. A potential difference of 1.5 mV will balance against a length of

  • A load resistance R is connected across a cell of emf E and internal resistance r. If the closed-circuit p.d. across the terminals of the cell is V, the internal resistance of the cell is

  • The open-circuit potential difference across the terminals of a cell balances on 150 cm of a potentiometer wire. When the cell is shunted by a 4.9 Ω\Omega resistor, the balancing length reduces to 147 cm. The internal resistance of the cell is

  • To convert a galvanometer into an ammeter

  • To convert a galvanometer into a voltmeter

  • An ideal ammeter has

  • An ideal voltmeter has

  • The fraction of the total current passing through the galvanometer is

  • In parallel combination of n cells, we obtain