Question

Electromagnetic induction is the production of a voltage across a conductor when it is exposed to a varying magnetic field. This process is essential in which of these technologies? A)Laser technolgy. B)electric motors. C) Automobile manufacturing. D) Electric power distribution.

Answer 1

Answer:

D) Electric power distribution.

Explanation:

Electric power distribution requires high voltages to efficiently transmit electric power. This requires use of a transformer which uses electromagnetic induction.

Answer 2

Answer:

D) Electric power distribution.

Explanation:

As we know that the Faraday's law of electromagnetic induction says that rate of change in magnetic flux linked with a closed conducting loop will induce EMF in the loop.

This induced EMF is used for power production so here when we use it for the production of voltage across conductor.

it is used in AC generator when a coil is rotated at high speed between strong magnetic field of magnets.

This is induced EMF is given by

$EMF = NBA\omega sin(\omega t + \phi)$

so here correct answer will be

D) Electric power distribution.