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Oak National Academy
12 questions
In a drawing of the magnetic field lines around a magnet, the field lines are closer together in some areas than others. Which of the following statements is correct?
What do the directions of magnetic field lines represent?
A compass usually points north. If the needle of a compass is deflected (changes direction) so that it no longer points north, which of the following are possible explanations?
Which of the following statements are correct?
Two variables have this relationship: whenever the value of one variable is multiplied by a number, the value of the other variable is multiplied by the same number. The two variables are directly...
Two equal and opposite forces act on the ends of a ruler as shown by the arrows. The ruler is initially stationary. Which of the following describes what happens to the ruler?
Which of the following statements about magnetic flux density are correct?
Which of the following describes the magnetic field lines near a straight current-carrying wire?
Which of the following are characteristics of a uniform magnetic field?
Fleming’s left-hand rule can be used to predict the direction of the force on a current-carrying wire in a magnetic field. Match each digit with what it represents in the left-hand rule.
A 12 cm length of straight wire carrying a current of 1.2 A is in a uniform magnetic field with flux density 0.50 T. The size of the force on the wire is ___ N.
The diagram shows a current-carrying loop of wire in a uniform magnetic field. Three sides of the loop are labelled P, Q and R. Match each side to a description of the force acting on it.
