G485 Module 1 - Magnetic Fields
Syllabus: OCR Physics A - Unit G485
Covers pages 96, 97,100 - 105 in the textbook, on Electric Fields.
Happy revising!
- Created by: Beth1234
- Created on: 15-06-11 15:15
Other questions in this quiz
2. What is Fleming's left-hand rule used to determine?
- Force on a current carrying conductor placed parallel to a magnetic field.
- Current generated when a force acts on an object at right angles to a magnetic field.
- Force on a current carrying conductor placed at right angles to a magnetic field.
- Force on a magnetic field when a current passes through it.
- Current generated when a force acts on an object parallel to a magnetic field.
3. Which of the following facts are NOT true?
- Imagine a long straight wire, with current coming out of the screen towards you. The field goes clockwise around it.
- Placing an iron core inside a colenoid will create an electromagnet.
- Electromagnets can be used in fusion reactors.
- The field around a wire is circular.
- The strength of a electromagnet can be increased by increasing the number of turns in the wire around it.
4. What is flux density?
- Force on one metre of wire carrying a current of one amp at right angles to the magnetic field.
- Field around one metre of wire carrying a current of one amp at right angles to the force.
- Force on one metre of wire carrying a current of one amp parallel to the magnetic field.
5. Magnetic fields can change a particle's direction, but not its speed.
- True
- False
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