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Current Electri...

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  • Question 1
    4 / -1

    What is the resistance of a carbon resistance which has bands of colours brown, black and brown?

  • Question 2
    4 / -1

    The lead wires should have

  • Question 3
    4 / -1

    The alloys constantan and manganin are used to make standard resistance because they have

  • Question 4
    4 / -1

    When a potential difference is applied across the ends of a linear metallic conductor

  • Question 5
    4 / -1

    The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then

  • Question 6
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    A wire of diameter 0.02 metre contains 1028 free electrons per cubic metre. For an electrical current of 100 A, the drift velocity of the free electrons in the wire is nearly

  • Question 7
    4 / -1

    The following four wires are made of the same material and are at the same temperature. Which one of them has highest electrical resistance?

  • Question 8
    4 / -1

    The colour sequence in a carbon resistor is red, brown, orange and silver. The resistance of the resistor is

  • Question 9
    4 / -1

    A colour coded carbon resistor has the colours orange, blue, green and silver. Its resistance value and tolerancepercentage respectively are

  • Question 10
    4 / -1

    The tolerance level of a resistor with the colour code red, blue, orange, gold is

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