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Oak National Academy
12 questions
Two magnets have their poles on their large, flat faces. They are positioned as shown in the diagram. Which of the following statements about the magnetic field between them are correct?
Which of the following diagrams show a uniform magnetic field between two magnets?
Which of the following can be caused by moving a wire through a magnetic field?
A pupil induces a current in a coil by moving a magnet into the coil. Which of the following changes would increase the induced current?
Which of the following actions induces a potential across a wire that is in an unchanging magnetic field?
A simple circuit has a resistor connected to a battery. The resistor does not heat up significantly. Which of the following statements are correct?
Current that always goes in the same direction is called ___ current.
Match each key term with the correct description.
Which of the following statements about Fleming’s right–hand rule are correct?
The diagrams show a wire loop in a magnetic field with direction shown by the grey arrow. The wire is pushed as shown by black arrows. It is part of a circuit. In which diagram is no current induced?
Which of the following statements about a dynamo are correct?
The diagram shows an alternator’s magnets and coil (but no other parts). One side of the coil is painted orange; it is on the right, touches the left contact, and moves up. Which statement is correct?
