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# Is florescence produced due to electric current?

Updated: 9/18/2023

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13y ago

NO

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13y ago

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Q: Is florescence produced due to electric current?
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### What flows through a circuit and causes a magnetic field?

An electric current flowing through a circuit causes a magnetic field. This is due to the movement of electric charges, usually electrons, in the circuit. The magnetic field produced is perpendicular to the direction of the current flow.

"friction"

### What is joule's law of heating?

The heat produced due to electric current through a resistance is i) directly proportional to the square of the current ii) directly proportional to the resistance value of the conductor iii) directly proportional to the time of flow of current.

### What do you understand by electric current?

electric current is the flow of electrons due to external energy (emf) supplied by the voltage source.

### How are electric currents and magnetism related?

Magnetism could be produced due to the flow of electrical current. This was first discovered by Oersted. By changing the magnetic flux linked with a coil electric current could be induced. This was first studied by Michael Faraday. Just due to the orbital motion or spin motion of electron magnetism is produced in tiny form and is known as magnetic dipoles. Such dipoles getting oriented in different form lead to form dia, para and ferro magnetic materials.

Electric current

### Why does a metallic piece become hot when it is surrounded by a coil carrying high frequency alternating current?

This is because of the eddy curents produced due to the changing electric and magnetic fields.

### Why does a metal spring contract when an electric current is passed through it?

due to magnetic fields produced which attract each other since parallel current carrying conductors attract each other

### Can An electric current be produced by a changing magnetic force?

It's not the force. It's the changing magnetic field surrounding an electricalconductor, whether or not that conductor feels any force due to the field.

### Why does a metallic piece become very hot when it is surrounded by a coil carrying high frequency alternating current?

This is because of the eddy curents produced due to the changing electric and magnetic fields.

### Who found heating effect of electric current?

Joule showed the heating effect due to the resistence of wire which cary the current.

### What is the electrical current in a circuit?

Conventionally electric current was assumed to be a flow of positive charges. But in reality especially in metals electric current is due to the flow of negatively charged electrons. So direction of conventional current is opposite to the direction of flow of electrons. But in case of liquids as well as solids electric current is due the flow of both positive and negative ions.