Physics 1 Problem Solutions 185

Physics 1 Problem Solutions 185 - Chapt 23 The Electric...

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Unformatted text preview: Chapt. 23 The Electric Field 181 a) an electric dipole moment. b) an electric monopole moment. c) a magnetic dipole moment. d) a magnetic monopole moment. e) an electric field moment. 023 qmult 00310 1 1 3 easy memory: dipole definition 11. All finite charge distributions have a dipole moment (which may be zero), but usually only one with an non-zero dipole moment and that is overall neutral (i.e., has zero monopole moment) is called a a) tripole. b) monopole. c) dipole. d) monocle. e) maypole. 023 qmult 00320 1 4 2 easy deducto-memory: dipole moment electric field 12. “Let’s play Jeopardy ! For $100, the answer is: E ( vector r ) = k bracketleftbigg 3( vector p · ˆ r )ˆ r − vector p r 3 bracketrightbigg .” What is the moment electric field in the far-field limit, Alex? a) monopole b) dipole c) quadrupole d) octupole e) hexacontatetrapole 023 qmult 00330 1 1 3 easy memory: dipole far-field 13. The far-field electric field of an electric dipole falls off as: a) 1 /r . b) 1 /r...
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