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Current Electricity Test - 4

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  • Question 1
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    Practical application of mutual inductance is ____________

    Solution

    A transformer is a device made of two or more inductors, one of which is powered by AC, inducing an AC voltage across the second inductor. The purpose of a transformer is to either step up the voltage or step it down.

  • Question 2
    1 / -0

    The phenomenon in which EMF induced in a single isolated coil due to change of flux through the coil by means of varying the current through the same coil is called __________

    Solution

    The phenomenon in which EMF induced in a single isolated coil due to change of flux through the coil by means of varying the current through the same coil is called self-induction. It is the property of a coil by virtue of which the coil opposes any change in the strength of current flowing through it.

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