Solenoid - GCSE Physics Definition

Reviewed by: Caroline Carroll

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A solenoid is a long coil of wire, often wound in a helical shape, through which an electric current can flow. When electricity passes through the solenoid, it creates a magnetic field around it, which is similar to the magnetic field of a bar magnet. Within the solenoid, the magnetic field is very strong as each coil creates its own magnetic field, which add up to form an even stronger one. Solenoids are used in many devices to convert electrical energy into mechanical energy, acting as an electromagnet. For example, they can be found in doorbells, car starter motors, and electric locks.

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Caroline Carroll

Reviewer: Caroline Carroll

Expertise: Physics & Chemistry Subject Lead

Caroline graduated from the University of Nottingham with a degree in Chemistry and Molecular Physics. She spent several years working as an Industrial Chemist in the automotive industry before retraining to teach. Caroline has over 12 years of experience teaching GCSE and A-level chemistry and physics. She is passionate about creating high-quality resources to help students achieve their full potential.

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