DefinePK

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welcome to candle academy Pakistan. this is lecture number 20 of chapter 14 electromagnetic induction class 12 physics Federal and kpk board. in this lecture examples are solved.

00:35 example 14.1

A coil of 100 turns is linked by a flux of 20 mWb if this flux is reversed in a time of 2 milliseconds calculate the average EMF induced in the coil.



05:09 example 14.2

at what rate would it be necessary for a single conductor to cut the flux in order that current of 1.2 mili ampere flows through it when 10 ohm resistor is connected across its ends?




10:14 example 14.3

a coil of mean area 500 centimetre square having 1000 turns is held perpendicular to a uniform field of 0.4 gauss.the coil is turned through 180 degree in 1/10 seconds. calculate average induced EMF.



17:30 example 14.4

a loop of resistance 2.1 ohm is placed in a magnetic field of 2T if a conductor of length
.2m is sliding along a loop with a velocity of 0.2 metre per second find
a- the EMF produced in the conductor if motion of the conductor is perpendicular to the field
b- current through the loop
c- the electrical power generated
d_ the input mechanical power

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