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elica85
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An LR circuit contains a battery hooked up to an inductor and a resistor in series. A switch effectively removes the battery from the circuit. The switch is initially closed. Immedeiately after the switch is opened, the voltage at location B is...
 2 years ago
 2 years ago
elica85 Group Title
An LR circuit contains a battery hooked up to an inductor and a resistor in series. A switch effectively removes the battery from the circuit. The switch is initially closed. Immedeiately after the switch is opened, the voltage at location B is...
 2 years ago
 2 years ago

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elica85 Group TitleBest ResponseYou've already chosen the best response.0
dw:1334851241226:dw
 2 years ago

elica85 Group TitleBest ResponseYou've already chosen the best response.0
equal to, higher than, or lower than the voltage at location A?
 2 years ago

ramkrishna Group TitleBest ResponseYou've already chosen the best response.0
higher than the voltage at location A because inductor opposes the change.
 2 years ago

rajathsbhat Group TitleBest ResponseYou've already chosen the best response.1
@ramkrishna is right about this in the most commonest sense. No offence@ramakrishna. But if you look at it from the point of view of pure physics, its wrong. Because an inductor is just a piece of wire. There cannot be a "potential difference" between the ends of a piece of metallic wire, remember!!! If you are confused, I suggest you read one of Prof. Walter Lewin's most excellent lecture supplements here: http://ocw.mit.edu/courses/physics/802electricityandmagnetismspring2002/lecturenotes/lecsup41.pdf
 2 years ago

elica85 Group TitleBest ResponseYou've already chosen the best response.0
inductor acts like a piece of wire when connected to battery. i'm sorry, i didn't make it clear in the drawing, the battery disconnects from the circuit so now the inductor does not act as just a piece of wire. it keeps the current flowing for time t.
 2 years ago

elica85 Group TitleBest ResponseYou've already chosen the best response.0
i don't understand how to get potential difference without any given values. V_R=IR and V_L=LdI/dt
 2 years ago

rajathsbhat Group TitleBest ResponseYou've already chosen the best response.1
even then it is a piece of wire
 2 years ago

elica85 Group TitleBest ResponseYou've already chosen the best response.0
but there is potential difference...?
 2 years ago

rajathsbhat Group TitleBest ResponseYou've already chosen the best response.1
no no... you've got it all wrong. This is all a misconception. that is why I posted the link. Read carefully and find out for yourselves!!!
 2 years ago

ramkrishna Group TitleBest ResponseYou've already chosen the best response.0
a current carrying loop has a net magnetic flux. and whenever there is change in magnetic flux the loop will oppose that. (Lenz's law)
 2 years ago

rajathsbhat Group TitleBest ResponseYou've already chosen the best response.1
all of you who think there is a "potential difference" between the ends of an inductor should seriously watch this video completely: http://ocw.mit.edu/courses/physics/802electricityandmagnetismspring2002/videolectures/lecture16electromagneticinduction/ PLEASE FOR THE SAKE OF CORRECT UNDERSTANDING
 2 years ago

elica85 Group TitleBest ResponseYou've already chosen the best response.0
thank you i will be watching it soon but must study so i have no time right this moment. thx~
 2 years ago
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