What this topic covers
Topic P4: Magnetism and magnetic fields has 2 subtopics:
- P4.1 Magnets and magnetic fields
- P4.2 Uses of magnetism
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GCSE OCR Higher Physics · Topic 4 of 9
Topic P4: Magnetism and magnetic fields – GCSE OCR Higher Physics revision notes
Choose a subtopic. OCR Magnetism and magnetic fields: magnets and uses of magnetism. 19 lessons in 2 subtopics.
Revise Topic P4: Magnetism and magnetic fields for GCSE OCR Higher Physics, including P4.1 Magnets and magnetic fields. 19 lessons across 2 subtopics.
19
Lessons
2
Subtopics
Topic P4: Magnetism and magnetic fields lessons by subtopic
19 lessons, grouped by subtopic.
P4.1 Magnets and magnetic fields
- Magnetic Poles and Forces
- Permanent vs. Induced Magnets
- Introduction to Magnetic Fields
- Plotting Magnetic Field Patterns
- Earth's Magnetic Field and Compasses
P4.2 Uses of magnetism
- Currents and Magnetic Fields
- Solenoids and Electromagnets
- The Motor Effect and Fleming's Left Hand Rule
- Factors Affecting Force on a Conductor
- Understanding Electric Motors
- Loudspeakers and Headphones: Converting Electricity to Sound
- The Generator Effect
- Factors Affecting Induced Potential
- AC and DC Generators
- Interpreting Generator Graphs
- Microphones and the Generator Effect
- Introduction to Transformers
- Voltage and Turns Ratio in Transformers
- Transformer Efficiency and Power
More in this course
Go back to the full GCSE OCR Higher Physics topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is Topic P4: Magnetism and magnetic fields?
OCR Magnetism and magnetic fields: magnets and uses of magnetism. 19 lessons in 2 subtopics.
What is the left-hand rule?
The left-hand rule, Fleming's left-hand rule, shows the direction of the force on a current-carrying conductor in a magnetic field. The The Motor Effect and Fleming's Left Hand Rule notes cover this in full.
Is aluminium magnetic?
Aluminium is not magnetic, and neither is copper, even though they are metals. The Introduction to Magnetic Fields notes cover this in full.
Is copper magnetic?
Copper is not magnetic, even though it is a metal; only iron, steel, cobalt and nickel are magnetic materials. The Introduction to Magnetic Fields notes cover this in full.
What is a solenoid?
A solenoid is a coil of wire that produces a magnetic field when current flows through it. The Solenoids and Electromagnets notes cover this in full.
How does a compass work?
A compass contains a magnetised steel needle, a small bar magnet, that can rotate freely on a pivot. The Earth's Magnetic Field and Compasses notes cover this in full.
What is an electromagnet?
An electromagnet is a solenoid with an iron core that can be switched on and off by controlling the electric current. The Solenoids and Electromagnets notes cover this in full.
How do you use Fleming's left-hand rule?
Fleming's left-hand rule uses the thumb, first finger and second finger held at right angles. The The Motor Effect and Fleming's Left Hand Rule notes cover this in full.
What is a magnetic field?
A magnetic field is the region around a magnet where a force acts on another magnet or on a magnetic material: iron, steel, cobalt and nickel. The Introduction to Magnetic Fields notes cover this in full.