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3 cards from this section. Quick, good the night before a test.
What shape do the magnetic field lines assume around a straight current-carrying wire?
Think about how waves form around a disturbance in water.
What is the Right-Hand Thumb Rule used for?
Consider the direction of your thumb as the indicator.
What does the Right-Hand Thumb Rule indicate?
Think about your thumb's orientation.
True or False: Magnetic field strength increases as you move further away from the wire.
What happens to the strength of a magnet the further you are from it?
If a straight wire carries a current of 3 A and the magnetic field strength at a distance of 2 cm is measured, what will be the magnetic field strength at a distance of 4 cm if the current remains constant? Assume linearity.
Refer back to the concept of distance influencing field strength.
A wire carrying 4 A produces a magnetic field with a strength of 0.2 T at a distance of 5 cm. If the current is doubled, what will the new strength of the magnetic field be at the same distance?
Think about how current influences the intensity of the magnetic field.
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