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Current Electricity Test - 62
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Current Electricity Test - 62

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  • Question 1/10
    4 / -1
    The resistance of a galvanometer coil is R. What is the shunt resistance required to convert it into an ammeter of range 4 times?
    Solutions

  • Question 2/10
    4 / -1
    If an ammeter is connected in parallel to a circuit, it is likely to be damaged due to excess
  • Question 3/10
    4 / -1
    In the given figure, battery E is balanced on 55 cm length of potentiometer wire but when a resistance of 10 Ω is connected in parallel with the battery then it balances on 50 cm length of the potentiometer wire then internal resistance r of the battery is

    Solutions

  • Question 4/10
    4 / -1
    In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of 2 Ω, the balancing length becomes 120 cm. The internal resistance of the cell is
    Solutions

  • Question 5/10
    4 / -1
    The resistance of an ideal ammeter is
  • Question 6/10
    4 / -1
    A galvanometer has a resistance of 25 ohm and a maximum of 0.01 A current can be passed through it. In order to change it into an ammeter of range 10 A, the shunt resistance required is
    Solutions

  • Question 7/10
    4 / -1
    In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance 0.1 ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance

    Solutions

  • Question 8/10
    4 / -1
    Voltmeters V1 and V2are connected in series across a D.C. line. V1 reads 80 volt and has a per volt resistance of 200 ohm. V2 has a total resistance of 32 kilo ohm. The line voltage is
    Solutions

  • Question 9/10
    4 / -1
    AB is a potentiometer wire of length 100 cm and its resistance is 10 ohm. It is connected in series with a resistance R = 40 ohm and a battery of e.m.f. 2 V and negligible internal resistance. If a source of unknown e.m.f. E is balanced by 40 cm length of the potentiometer wire, the value of E is

    Solutions

  • Question 10/10
    4 / -1
    An ammeter gives full deflection when a current of 2 amp. flows through it. The resistance of ammeter is 12 ohm. If the same ammeter is to be used for measuring a maximum current of 5 amp., then the ammeter must be connected with a resistance of
    Solutions

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