PHYS 102 Unit 10 Exam Questions and Correct Answers Latest Update 2024 Already Passed
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PHYS 102 Unit 10
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PHYS 102 Unit 10
PHYS 102 Unit 10 Exam Questions and Correct Answers Latest Update 2024 Already Passed
transformers - Answers work by faradays law, changing current in primary creates changing flux in primary and secondary P=IV=IV=P
electrical power distribution - Answers transformers make it possible to distrib...
PHYS 102 Unit 10 Exam Questions and Correct Answers Latest Update 2024 Already Passed
transformers - Answers work by faradays law, changing current in primary creates changing flux in
primary and secondary P=IV=IV=P
electrical power distribution - Answers transformers make it possible to distribute electrical power at
high voltage and step down to low voltage at your house, I=P/V
changing E field generates B field - Answers 2pirB=ueAdeltaE/delta t
maxwell equation 1 - Answers guass's law, E flux=EA=q/e
maxwell equation 2 - Answers gauss's law, M flux=BA=0
properties of electromagnetic waves - Answers EM wave propagate in vacuum at speed of v=c, E and B
oscillate in phase and are proportional, E and B are perpendicular to both each other and to propagation
direction
wave front - Answers surfaces at crests of EM wave
electric field energy density - Answers Uc=1/2eE^2Ad
average energy density - Answers u(t)=1/2e(Esinwt)^2
total energy - Answers utot=eErms^2=1/u Brms^2
EM wave power - Answers P=delta U/delta t = Utot/Ac
EM wave intensity - Answers I=S=P/A = Utot c
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