Question: A coil 3 . 7 0 cm radius, containing 5 5 0 turns, is placed in a uniform magnetic field that varies with time according

A coil

3.70

cm radius, containing

550

turns, is placed in a uniform magnetic field that varies with time according to B

= (1.20 10 2

/

)

+ (2.80 10 5

/

4)

4 .

The coil is connected to a

690 -

resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. Find the magnitude of the induced emf in the coil as a function of time. What is the current in the resistor at time t

0 = 5.30

?

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