1. A flat circular coil with 115 turns. a radius of 440 x perpendicular to the p

Question

1. A flat circular coil with 115 turns. a radius of 440 x perpendicular to the plane of the coil. The the coil 10.2 m, and a resistance of 0.410 is exposed to an external magnetic field that is directed The magnitude of the external magnetic field is changing at a rate of AB/At-0.793 T's. Find the induced current in 2. The moving rod in the figure is 27.0 cm long and moves with a speed of 29.0 cm/s. If the magnetic field is uniform with a magnitude of 0.55 T, and the resistance of the circuit is S5.0 . a) what is the induced current in the rod? Amp 3. b) What is the direction of the induced current in the circuit? Counter-clockwise Clockwise 4. At a particular moment in time and space, we measure South and the magnetic field B pointing Up. What is the direction of wave propagation? an electromagnetic wave's electric and magnetic fields. We find the electric field E pointing

Explanation / Answer

(1) ans

Given that

number of turns N=115 turns

dB/dt=0.793 T/s

resistance R=0.41 ohm

radius r=4.4*10^-2 m

area A=3.14*(4.4*10^-2)^2=60.8*10^-4 m^2

now we find the induced emf

induced emf E=NAdB/dt=115*60.8*10^-4*0.793=0.5545 v

now we find the induced current

induced current i=E/R=0.5545/0.41=1.4 A

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(2) ans

Given that

magnetic field B=0.55 T

speed V=0.29 m/s

length L=0.27 m

now we find the induced emf

induced emf E=0.55*0.29*0.27=0.043065 v

now we find the induced current

induced current i=0.043065/55=7.83*10^-4 A

the direction of the induced current is clockwise direction

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