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Statement (A) : Step up transformer conv...

Statement (A) : Step up transformer converts low voltage, high current to high voltage, low current
Statement (B) : Transformer works on both ac and dc.

A

`A` is true but `B` is false

B

Both `A` and `B` is true

C

`A` is false but `B`d is true

D

Both `A` and `B` are false

Text Solution

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Knowledge Check

  • A device which converts low ac voltage at high current into high ac voltage at low current is

    A
    electrochemical cell
    B
    photo cell
    C
    transformer
    D
    rectifier

  • Assertion : A step-up transformer changes a low voltage into a high voltage. Reason : This violate the law of conservation of energy.

    A
    If both assertion ans reason are true ans reaason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion istrue but reason is false.
    D
    If both assertion and reason are false.

  • Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice versa?

    A
    Generator
    B
    Motor
    C
    Transformer
    D
    Vibrator

    • Similar Questions

    Explore conceptually related problems

    (i) With the help of a labelled diagram, describe briefly the underlying principle and working of a step up transformer. (ii) A step up transformer converts a low input voltage into a high output voltage. Does it violate law of conservation of energy? Explain. (iii) Write any two sources of energy loss in a transformer.

    Why can’t transformer be used to step up or step down dc voltage?

    Can we a transformer be used to step up or step down a D.C. voltage? Explain.

    In a step-up transformer, if the voltage in the secondary is increased, then the current in the primary

    Consider the following two statements A and B and identify the correct answer. (A) In a transformer a large alternating current at low voltage can be transformed into a small alternating current at high voltage (B) Energy in current carrying coil is stored in the form of magnetic field.

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