Per18_exercise - b) A current carrying wire experiences a...

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Period 18 Exercises E.1 Which statement regarding current is TRUE? a) Current in a wire produces a magnetic field. b) Induced currents produce magnetic fields. c) Solenoids can be used with alternating current. d) The larger the current, the larger the magnetic field produced by the current. e) All of the statements are true. E.1 = e E.2 Which of the following will NOT exert a force on a moving charge? a) a permanent magnet b) an electromagnet c) a current carrying wire d) another moving charge e) an insulator E.2 = e 18-Ex 1&2
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E.3 The movement of the coil of wire in a loudspeaker when a current is sent through the coil a) illustrates the conversion of sound energy to electrical energy. b) is an example of sound energy converted to magnetic energy. c) illustrates the fact that a current carrying wire in a magnetic field experiences a force. d) none of the above is correct E.3 = c 18-Ex 3
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E.4 Which of the following principles is used in the design and operation of a stereo loudspeaker? a) A permanent magnet experiences a force when placed in the field of another permanent magnet.
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Unformatted text preview: b) A current carrying wire experiences a force when placed in the field of another current carrying wire. c) A current carrying wire experiences a force when placed in the field of a permanent magnet. d) A capacitor experiences a force when placed in the field of a permanent magnet. e) None of these is used in loudspeakers. E.4 = c E.5 Which kind of energy is not present in a working loudspeaker? a) electrical b) magnetic c) chemical d) sound e) mechanical E.5 = c 18-Ex 4&5 E.6 Which of the following does NOT make use of wave motion and energy? a) A bowling ball strikes a bowling pin. b) A radio plays music transmitted from a radio station. c) A microwave oven heats a slice of pizza. d) Jane is reading by the light of an incandescent lamp. e) A tennis ball floating on the river bobs up and down as a boat passes by. E.6 = a 18-Ex 6 Solutions to Period 18 Exercises E.1 = e E.2 = e E.3 = c E.4 = c E.5 = c E.6 = a...
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Per18_exercise - b) A current carrying wire experiences a...

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