Electromagnet

by | Aug 27, 2020 | Magnetic Effects of Current

 An electromagnet is a temporary magnet in which a long insulated copper wire is wrapped on a soft iron core in the form of a helix. Thus, an electromagnet is a solenoid having a core of soft iron core at its centre. When electric current in passed through it, it...

Solenoid Magnetic Field

by | Aug 27, 2020 | Magnetic Effects of Current

A solenoid is a long insulted copper wire wound in the form of a helix. When an electric current in passed through a solenoid, magnetic field is produced around it. The pattern of magnetic field produced in a solenoid when an electric current is passed through it is...

Right-Hand Thumb Rule

by | Aug 27, 2020 | Magnetic Effects of Current

 Right hand thumb rule was given by Maxwell. So this rule is also known as Maxwell’s right hand thumb rule. According to this rule, imagine that you are holding a current carrying wire in your right hand so that the thumb points in the direction of the current, then...

Magnetic Field Around a Wire

by | Aug 27, 2020 | Magnetic Effects of Current

To find out magnetic field around a wire carrying electric current take a wire and pass it through the centre of a horizontal sheet of cardboard. Connect the ends of wire to a battery. Sprinkle some iron fillings on the cardboard sheet and switch on the circuit to...

Magnetic Effect of Electric Current

by | Aug 27, 2020 | Magnetic Effects of Current

The magnetic effect of electric current was discovered by H.C. Oersted in 1820. He observed that flow of electric current through a conductor produce a magnetic field around it. The magnetic effect of current can be demonstrated by doing following experiment. Oersted...