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Electromagnetic Induction
Flash cards
Page 2


Electromagnetic Induction
Flash cards
An introduction to Electromagnetic induction 
Whenever magnetic flux linked through a circuit or coil changes, an e.m.f is 
produced in it. The e.m.f lasts so long as magnetic flux changes. This phenomenon is 
known as electromagnetic induction.
Page 3


Electromagnetic Induction
Flash cards
An introduction to Electromagnetic induction 
Whenever magnetic flux linked through a circuit or coil changes, an e.m.f is 
produced in it. The e.m.f lasts so long as magnetic flux changes. This phenomenon is 
known as electromagnetic induction.
Magnetic Flux (continued)
1 The magnetic flux ? linked with any surface placed in a magnetic field is 
measured by the total number of magnetic lines of force passing through it.
Page 4


Electromagnetic Induction
Flash cards
An introduction to Electromagnetic induction 
Whenever magnetic flux linked through a circuit or coil changes, an e.m.f is 
produced in it. The e.m.f lasts so long as magnetic flux changes. This phenomenon is 
known as electromagnetic induction.
Magnetic Flux (continued)
1 The magnetic flux ? linked with any surface placed in a magnetic field is 
measured by the total number of magnetic lines of force passing through it.
Magnetic Flux (continued)
2 Suppose magnetic field makes an angle ? with the elemental area vector       , 
then magnetic flux through the area,
Page 5


Electromagnetic Induction
Flash cards
An introduction to Electromagnetic induction 
Whenever magnetic flux linked through a circuit or coil changes, an e.m.f is 
produced in it. The e.m.f lasts so long as magnetic flux changes. This phenomenon is 
known as electromagnetic induction.
Magnetic Flux (continued)
1 The magnetic flux ? linked with any surface placed in a magnetic field is 
measured by the total number of magnetic lines of force passing through it.
Magnetic Flux (continued)
2 Suppose magnetic field makes an angle ? with the elemental area vector       , 
then magnetic flux through the area,
Magnetic Flux (continued)
3 It is a scalar quantity with S.I. unit weber, where 1weber              and C.G.S. unit is 
gauss or maxwell.
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