# Current vs. Induced Current: What's the Difference?

• Soaring Crane
In summary, current flows when a switch is open, while induced current flows when a switch is closed. There is a difference between the two, and induced current has a direction that opposes the change in the magnetic field that induces the current.
Soaring Crane
If a switch of a circuit system of a wire loop is open, then no current flows. There would also be no magnetic flux and induced current if it remains open, right?

What is the difference between current and induced current? I know the latter arises from a change in the magnetic field, but what else is there to know?

Thanks.

Soaring Crane said:
What is the difference between current and induced current? I know the latter arises from a change in the magnetic field, but what else is there to know?

Thanks.

An induced current has a direction such that the magnetic field due to the induced current opposes the change in the magnetic field that induces the current

marlon

Besides, if there is no current in the primary chain (coming from a battery) there will still be an induced current in the secondary chain (no battery connected to it) because the magnetic field will 'break down' and thus it will induce a current in the second chain. the two chains are mostly interconnected by some ferromagnetic material

marlon

The difference of both names & concepts stands in the cause that produces the curerents."The latter" appears from a change in the magnetic flux (which is a scalar,BTW,so we worry only with changes in time,and not in space)...I believe that's what the theorem/law of Faraday says...

So to use equations,the difference could be visualized from

$$\vec{E}=-\nabla\phi$$

and

$$\mbox{induced \ electromotive \ tension} =-\frac{d}{dt}\iint_{S} \vec{B}\cdot \vec{n} \ dS$$

Daniel.

Perhaps the most striking difference is the fact that electric potential has meaning only for E-fields that are produced by static charges (like the E-field between two electrodes); it has NO meaning for E-fields that are produced by induction...

to dextercioby : talking about blabla-tension and multi-dimensional integrals ain't going to do much good in the grade K-12-level, amigo

marlon

marlon said:
to dextercioby : talking about blabla-tension and multi-dimensional integrals ain't going to do much good in the grade K-12-level, amigo

marlon

1.I didn't realize the thread was in K-12.
2.In HS,everyone knows what an electromotive tension is...

Daniel.

## What is the difference between current and induced current?

Current refers to the flow of electric charge, while induced current is the result of a changing magnetic field creating an electric field and causing a flow of charge.

## How is current generated in a circuit?

Current is generated when a potential difference, or voltage, is applied to a circuit, causing electrons to move from the negative terminal to the positive terminal.

## What causes induced current?

Induced current is caused by a changing magnetic field, either through motion or a change in current in a nearby conductor.

## What is Faraday's law of induction?

Faraday's law of induction states that the induced electromotive force in a closed circuit is proportional to the rate of change of the magnetic flux through the circuit.

## How does current and induced current affect electrical devices?

Current is necessary for electrical devices to function, while induced current can cause interference and damage in some cases, but can also be harnessed for use in devices such as generators and transformers.

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