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olga nikolaevna [1]
4 years ago
9

Select the correct answer.

Physics
1 answer:
DochEvi [55]4 years ago
8 0

Answer:

A. alternating current

Explanation:

An alternating current is that which changes polarity in a periodic manner. It is generated when a conductor cuts or breaks magnetic field lines in such  a way that it periodically alternates or switches its direction of motion or position between the north and south poles of the magnetic field.

The switching of the direction of motion makes the polarity of the induced current to change in a manner that corresponds to the motion of the conductor. This is what generates an alternation current (a.c)

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Overcurrent protective devices are normally installed in a branch circuit from where the conductors receive their supply.

<h3>What is resistance?</h3>

Resistance is the obstruction of electrons in an electrically conducting material. The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.

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The vercurrent protective devices are normally installed in a branch circuit from where the conductors receive their supply.

Thus, In a branch circuit, overcurrent safety devices are often located from where the conductors get their supply.

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