krypton
A generator is constructed by rotating a coil of N turns in a magnetic field B at a frequency f. The internal resistance of the coil is R and the cross sectional area of the coil is A. Choose the correct response for each of the following statements. True or False
The average induced EMF doubles if the area A is doubled.
The average induced EMF doubles if the resistance R is doubled.
The average induced EMF doubles if the frequency f is doubled.
The average induced EMF doubles if the magnetic field B is doubled.
The maximum induced EMF occurs when the coil is rotated about the axis of t
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shamim
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1 is true
krypton
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ok,go on
shamim
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3 is true
shamim
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4 is true
shamim
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axis of t means
shamim
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5 is not clear to me
shamim
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but 5 may b true
shamim
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i guessed
krypton
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The maximum induced EMF occurs when the coil is rotated about the axis of the coil.
shamim
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ya 5 is true
krypton
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thats 5
shamim
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now i wanna talk abt question 2
krypton
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what about this
The maximum induced EMF occurs when the coil is rotated about an axis parallel to the magnetic field lines.
shamim
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ya its right
shamim
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i know the curent creats for the rate of change of magnetic field. if the rate of change of magnetic field is higher then induced current will b higher
shamim
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coil shoul cover magnetic field lines to create induced current
shamim
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i think if the coil rotate along its axis then those magnetic field lines will go through the coil
shamim
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and the rate of change of magnetic field will b higher
shamim
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m i right
shamim
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anyway i think ur question 2 is false
shamim
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induced EMF does not depend on the resitance
shamim
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of coil
krypton
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i dont know much about this topic,i tried false and it didnt work,which means some other answer might be wrong
shamim
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r u telling abt ur answer 2
krypton
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yes
shamim
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so u r telling ur answer 2 is right
shamim
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then i wanna try it later
krypton
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i havent tried true
shamim
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i c
krypton
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so u saying all of them is true,except 2?
shamim
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ya
krypton
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IS SAYING WRONG ANSWER
shamim
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do u hv right answer
krypton
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NOPE
shamim
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ok
shamim
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ur answer 3 and 2 are false
shamim
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try it now
krypton
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is still wrong
shamim
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ha ha ha
shamim
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sorry
krypton
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no problem
shamim
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then try 2,3,5 false
krypton
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haha wrong :(
shamim
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ha ha ha
shamim
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so sory
shamim
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if u know the right answer , let me know plz
shamim
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and i wanna try it later
krypton
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ok sure