Question

What do you understand about the magnetic effect of electric current?

Answer 1

Hint: In order to solve this question we should know that when the current is passing through the wire then there is a deflection in the compass which only indicates that the wire through which current is passing shows the magnetic effect result of which caused deflection in the needle.

Complete step by step solution:
For solving this question we need to study it carefully
Magnetic effect of electric current- A magnetic field is a force field that is created by magnetic dipoles and moving electric charges, and it exerts a force on other nearby moving charges, and magnetic dipoles. Magnetic field is a vector quantity because it has both magnitude and direction.
Magnetic field lines- A magnetic field line or lines of forces shows the strength of the magnet and the direction of the magnet's force. It was discovered by Michael Faraday to visualize the magnetic field.
Direction of magnetic field lines- Magnetic field lines are directed from south pole to north pole inside the magnet and from north pole to south pole outside the magnet.
Strength of magnetic field lines- A straight current-carrying wire conductor has a magnetic field in the shape of concentric circles around it. The magnetic field of straight current-carrying conductors can be visualized by magnetic field lines.
The direction of magnetic field produced due to current-carrying conductors rely on the same direction on which current is flowing.
The direction of electric field gets reversed if the direction of electric current changes.
Suppose a straight current carrying conductor is hung vertically, and an electric current is flowing from north to south which is from up to down. In this situation, the direction of the magnetic field will be clockwise. And if current is flowing from south to north through the same conductor, the direction of the magnetic field will be anti-clockwise.
The direction of magnetic field in the electric current through a straight conductor can be represented by using right hand thumb rule.

Note:
Magnetic effect of electric current- the production of magnetic field around a conducting wire when electric current is allowed to flow through it, it is called magnetic field of electric current.
Right hand thumb rule assumes that you are holding a straight current carrying conductor in your right hand such that the thumb points towards the direction of the current. Then your fingers will wrap around the conductor in the direction of field lines of the magnetic field.