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Conduction Law

the rate of c...

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the rate of change of magnetic flux density through a circular coil of area 10 race to-2msquare and number of turns 100 is 10 race to 3 wb/msquare sec.the value of induced emf will be?

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Q. The rate of change of magnetic flux density through a circular coil of area 10 m and number of turns 100 is 10

^{3}

^{2}

/s. The value of induced emf will be

100

turns and resistance

100 Ω

is connected in series with a galvanometer of resistance

100 Ω

and the coil is placed in a magnetic field. If the magnetic flux linked with the coil changes from

10^{- 3} W b

2 \times 10^{- 4} W b

0.1 s,

calculate the induced emf and current.

Q. A wire 88 cm long bent into a circular loop is placed perpendicular to the magnetic field of flux density 2.5 Wb. Within 0.5 s, the loop is changed into a square and flux density is increased to 3.0 Wb. The value of e.m.f. induced is :

Q. A coil of resistance

10 Ω

1000

turns have the magnetic flux line of

5.5 \times 10^{- 4} W b

. If the magnetic flux changed to

5 \times 10^{- 4} W b .

0.1 s e c

, then the induced charge in coil is

Q. A magnetic flux of

5.5 \times 10^{- 4} Wb

is linked with a coil of resistance

10 Ω

1 turn

. If the magnetic flux is changed to

5 \times 10^{- 4} Wb

0.1 sec

, the induced charge in the coil is,

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