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44. F = qvB
charge of electron = ­1.6x10^­19 C
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True/Correct it. [10 points total] For each of the statements below, write TRUE or rewrite the italicized part to make the statement true.
An electric current is generated in a wire when the wire is moved so that it cuts across magnetic field lines.
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Current can be made to flow in a stationary wire by moving a magnetic field parallel to the wire.
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The electromotive force depends only on magnetic field strength, the length of wire in the magnetic field, and the velocity of the wire in the magnetic field.
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An electric generator converts mechanical energy to thermal energy.
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An electric motor is almost identical in construction to an electric generator, but the motor converts electric energy to mechanical energy.
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According to Lenz’s law, the direction of induced current is such that the magnetic field resulting from the induced current strengthens the change in field that caused the current.
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If a generator produces only a small current, then the opposing force on the armature will be small and the armature will be hard to turn.
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When a motor is first turned on, a large current flows because of the low resistance of the motor.
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When a piece of metal is moved through a magnetic field, eddy currents are generated in the metal.
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In a step­up transformer, the primary voltage is greater than the secondary voltage.
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