a uniform magnetic field B exists in the cylindrical region of radius 10 cm as A uniform wire of - Physics - Electromagnetic Induction

Question

a uniform magnetic field B exists in the cylindrical region of
radius 10 cm as A uniform wire of length 80 cm and resistance 4 0
Ω is bent into a squre frame and is placed with one side
along a diameter of the cylindrical region If the magnetic field
increases at a constant rate of 0 01 T/s,Find the current induced
in the frame

Neha Gupta · Accepted Answer

Side of the loop = 20 cm = 0
2 marea = 0 2×0 2 = 0
04 m2area of the cylinderical region = πr2 = 3
14×0 12 = 0
0314 m2when magnetic field changes, flux through the loop changes
Flux = BARate of change of flux = inducend emfe = -d(BA)dt =- AdBdt = -A×0
01 =- 0 03×0
01 = 3×10-4 voltnegative sihn states that induced emf oppose the change occur into it
current induced = eR = 3×10-44 = 0
75 ×10-4 A= 0 075 mA