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Electricity Tes...

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  • Question 1
    1 / -0

    Match the following with the correct response:

     (1) Electric current  (A) The current flowing through conductor is directly proportional
    to the potential difference applied across the ends of conductor.
     (2) Electric Potential  (B) Amount of charge flowing through an area in unit second.
     (3) Resistance  (C) Rate at which energy is consumed.
     (4) Power  (D) Work done in moving a unit charge from infinity to that point.

  • Question 2
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    Match the following with correct response:

     (1) Current divides at a junction  (A) Fuse
     (2) Two or more cells connected together  (B) Battery
     (3) Current is the same at all points  (C) Parallel circuit
     (4) They protect electrical appliances from high voltage  (D) Series circuit

  • Question 3
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    Match the following with the correct response:

     (1) Electric current  (A) Ammeter
     (2) Small deflection in the circuit  (B) Battery
     (3) Maintains potential difference between two points  (C) Galvanometer
     (4) Variable Resistance  (D) Rheostat

  • Question 4
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    The rate of electric energy loss in a thermal device due to resistance R is given by:
    A. P = I2/R
    B. P = V2/R
    C. P = I2/V
    D. P = V/I

  • Question 5
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    Three bulbs of 100 W, 200 W and 60 W are connected in series to the main supply of 220 V. The current will be:
    A. Equal in 100 W and 200 W.
    B. Equal in 200 W and 60 W.
    C. Different in all bulbs.
    D. None of the above

  • Question 6
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    Manganin is an alloy of:
    A. Copper
    B. Manganese
    C. Nickel
    D. Platinum

  • Question 7
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    Which of the following statements is/are incorrect?
    A. A neutron has a positive charge of + 1.6 × 10−19 C
    B. An ammeter is a low resistance device.
    C. Resistance of semiconductors decreases with temperature.
    D. One ampere is equal to 10−6 uA.

  • Question 8
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    Which of the following statements are correct about resistance?
    A. Resistance of a conductor is directly proportional to the length.
    B. Resistance of a conductor is directly proportional to the area of cross-section.
    C. Resistance of a conductor depends on the nature of the material.
    D. Resistance of conductor is inversely proportional to the length.

  • Question 9
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    Which of the following charges is possible?

    A. 1.6 × 10−19C

    B. 3.2 × 10−19C

    C. 6.4 × 10−19C

    D. 0.8 × 10−19C

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