X xBX хх X X X+QX X X X X X X X X In a circular region, there is a uni form magnetic field B pointing into the page as seen in Figure. An xy coordinate system has its origin at the circular region's center. A free positive charge +Q = 5 µC is initially at rest at a position x = +20 cm on the x axis. If the magnitude of the magnetic field is now decreased at a rate of -0.5 T/s, what force will act on +Q at that position? A) F = -250 j (nN) B) F = -20 j (nN) C)F =-112.5j (nN) D) F = -160ĵ (nN) E) F = -120 (nN)
X xBX хх X X X+QX X X X X X X X X In a circular region, there is a uni form magnetic field B pointing into the page as seen in Figure. An xy coordinate system has its origin at the circular region's center. A free positive charge +Q = 5 µC is initially at rest at a position x = +20 cm on the x axis. If the magnitude of the magnetic field is now decreased at a rate of -0.5 T/s, what force will act on +Q at that position? A) F = -250 j (nN) B) F = -20 j (nN) C)F =-112.5j (nN) D) F = -160ĵ (nN) E) F = -120 (nN)
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In a circular region, there is a uni form magnetic field B pointing into the page as
seen in Figure. An xy coordinate system has its origin at the circular region's
center. A free positive charge +Q = 5 µC is initially at rest at a position
x = +20 cm on the x axis. If the magnitude of the magnetic field is now
decreased at a rate of -0.5 T/s, what force will act on +Q at that position?
A) F = -250 j (nN) B) F = –20ĵ (nN) C)F = -112.5j (nN)
D) F = –160 ĵ (nN) E) F = -120ĵ (nN)
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