Solenoids & Magnetic Fields | GCSE Physics Practice
A solenoid is a coil of wire that produces a uniform magnetic field when current flows.
How does the magnetic field inside a solenoid compare to a bar magnet?
What is Solenoids & Magnetic Fields | Practice?
"A coil of wire which, when carrying an electric current, produces a magnetic field similar to that of a bar magnet."
Magnetic field lines always point from ____.
Why are step-up transformers used in the National Grid?
Increasing the current through a solenoid will ____ its magnetic field.
What happens to an electromagnet when the current is turned off?
Coiled Fields
The magnetic field inside a solenoid is strong and uniform.
The field outside is similar to a bar magnet.
Adding an iron core makes the solenoid significantly stronger.
Reversing current direction reverses the magnetic poles.
Visual Hack: Inside the coil, the field lines are parallel to the axis of the solenoid. It is much stronger than a single loop.
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