GDB soution phy101 2019 - Vu creator

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Sunday, February 3, 2019

GDB soution phy101 2019


GDB phy101 2019
Question:- “Is it true or wrong to say that, any magnetic field induces an emf in a loop of wire? Either yes or no explain it with a solid reason.”
ANSWER:-
No, it is wrong because AC current will produce (going back and forth/doing one then the other) magnetic file , and this (going back and forth/doing one then the other) magnetic field is which can cause EMF Why? Check faraday’s induction law:- \[EM{F_{induced = \,\, - N\frac{{d\phi }}{{dt}}}}\] For AC the rate of flux changing \[\frac{{d\phi }}{{dt}}\] is not zero SO cased EMF is created DC current will produce constant magnetic field, and because of this no rate of change flux \[\frac{{d\phi }}{{dt}} = 0\] then the caused EMF is zero . A note that the sudden changes like from OFF → ON in DC will caused an EMF because there is a rate of changing, and once it’s steady state no EMF is caused anymore. We can’t in general say that DC cause also EMF because of this case.
GDB soution phy101 2019 Reviewed by Retry programmer on February 03, 2019 Rating: 5 GDB phy101 2019 Question:- “Is it true or wrong to say that, any magnetic field induces an emf in a loop of wire? Either yes or no expl...

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