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WorksheetsInduced emf 1
Total questions: 10
Worksheet time: 22mins
Faraday’s Law states that the magnitude of the induced e.m.f. is _________________ to the rate of change of magnetic flux linkage with the solenoid.
equal
inversely proportional
directly proportional
No EMF is induced when?
When the wire is not moving
When the wire is parallel to magnetic field direction
When no lines are cut by the wire
all of the above
A conducting bar of length L is sliding with a constant velocity V along two conducting rails in the presence of a uniform magnetic field directed into the page. According to Faraday’s law, the emf induced across the ends of the bar is due to
The resistance of the circuit
The change in magnetic field strength
The change in the enclosed area in the magnetic field
The change in the current
Magnetic field lines point....
South to North
out of the north and south pole
North to south
into the north and south pole
According to Lenz’s law the direction of an induced current in a conductor will be that which tends to produce which of the following effects?
enhance the effect which produces it
produce a greater heating effect
produce the greatest voltage
oppose the effect which produces it
The production of electric current by a changing magnetic field is called ____________________________________.
induced current
electromotive force
electromagnetic induction
internal resistance
