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10th

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Resistance : Factors and Cases | Electricity | Assessment | English | Grade 10

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Resistivity depends upon _______ of the wire and it's SI unit is _____ .

    material of the wire; Ωm

    length of the wire; Ω

    material of the wire; Ω

    cross sectional area and length of the wire; Ωm

  • 2. Multiple Choice
    30 seconds
    1 pt

    Choose the correct statement: Assertion (A): Current is decreased when length of the wire is increased. Reason (R): Resistance in a circuit is directly proportional to the length of the wire.

    Both A and R are true and R is the correct explanation of A

    Both A and R are true but R is not the correct explanation of A

    A is true but R is false

    Both A and R are false

  • 3. Multiple Choice
    30 seconds
    1 pt

    What will happen to the resistance if the radius of the wire is made twice and length becomes half?

    Resistance will become 4 times

    Resistance will become 8 times

    Resistance will become half

    Resistance will become 1/8 times

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