Light up the bulb without connecting it to battery – The secret of electromagnetic induction

LED Light bulb is lit up using the principle of electromagnetic induction.

Have you ever wondered if it’s possible to light up a bulb without directly connecting it to a battery? The answer lies in the fascinating concept of electromagnetic induction—a principle discovered by Michael Faraday in the early 19th century. What is an electromagnetic induction? Electromagnetic induction occurs when a changing magnetic field creates an electric … Read more

What is a solenoid and how does it works?

What is a solenoid? A solenoid is a type of electromagnet which consists of coil of wire in a helical shape. It becomes a magnet when electric current pass through it. Usually, a movable metallic core, of ferromagnetic material such as iron is inserted into this helical coil. The magnetic field of this helical coil … Read more