Common

Can AC current produce magnetic field?

Can AC current produce magnetic field?

Yes. An alternating current produces an alternating magnetic field. Good side of alternating currents and magnetic fields: Transformers needs alternating currents for functioning, as this leads to alternating fields, which in turn results in alternating flux(time varying flux), which inturn results in an emf.

What effect does a coil have on direct current?

A coil (inductor) passes direct current smoothly, but presents a resistance to alternating current. The resistance increases towards higher frequencies. This effect is called the inductive reactance (XL) of the coil. The following relationship exists between the alternating current frequency (f) and the inductance (L).

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When current is passed through a coil of wire the magnetic lines of force at the center of the coil *?

Explanation: The current passing through a circular coil of two turns produces a magnetic field of 4μT AS ITS CENTER.

Why does AC current not show magnetic effect?

An alternating current does not show any magnetic effect. Reason: Alternating current does not vary with time. Hint: Alternating current is an electric current which varies which periodically reverses its direction and also magnitude of current changes with time.

When an electric current passes through a coil of wire instead of a single straight piece of wire what is the result?

When an electric current flows through the coil , it creates a magnetic field. This produces temporary magnetism in the iron core.

What happens when an electric current passes through a single straight piece of wire instead of a coil of wire?

Consider when a single straight piece of wire is bent into the form of a single loop as shown below. Although the electric current is flowing in the same direction through the whole length of the wire conductor, it will be flowing in opposite directions through the paper.

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How long does the induced current exist in a coil?

Induced current exists in the coil as long as the magnet field lines passing through it are changing.

What are the 2 ways to induce an electric current?

This change may be produced in several ways; you can change the strength of the magnetic field, move the conductor in and out of the field, alter the distance between a magnet and the conductor, or change the area of a loop located in a stable magnetic field.

Does AC show chemical effect?

Answer: In both battery charging and electrolysis, an electric field applied across the electrolytic solution or paste causes a chemical change. Applying AC would be charging the battery in one half of the cycle, and discharging it in the other half – the net effect is zero.