At time t = 0, a particle has a charge of 11 muC, is located in the z = 0 plane
ID: 1340074 • Letter: A
Question
At time t = 0, a particle has a charge of 11 muC, is located in the z = 0 plane at x = 0, y = 2. 3 m, and has a velocity equal to 34 m/s i^. Find the magnetic field in the z = 0 plane at the following. X = 1. 2m, y= 3. 4 m x = 2. 3 m, y = 2. 3 m X = 2. 3 m, y = 3. 4 m At time t = 0, a particle has a charge of 11 muC, is located in the z = 0 plane at x = 0, y = 2. 3 m, and has a velocity equal to 34 m/s i^. Find the magnetic field in the z = 0 plane at the following. X = 1. 2m, y= 3. 4 m x = 2. 3 m, y = 2. 3 m X = 2. 3 m, y = 3. 4 mExplanation / Answer
From Biot-savart law, magnetic field produced by a small current segment,
B = (mue/(4*pi))*(I*dL*sin(theta)/r^2)
we know,
I = dQ/dt
= dQ/dl * dl/dt
I*dl = dq*v
so, magnetic produced by a moving charged particle, B = (mue/(4*pi))*(q*v*sin(theta)/r^2)
a) at x = 1.2 m, y = 3.4 m
sin(theta) = (3.4 - 2.3)/sqrt( 1.1^2 + 1.2^2)
= 0.415
r = sqrt(1.1^2 + 1.2^2)
= 1.628 m
B = (4*pi*10^-7/(4*pi))*(11*10^-6*34*0.415/1.628^2)
= 5.86*10^-12 T
= 5.86 pT
b) x = 2.3 m, y = 2.3, sin(theta) = 0
so, B = 0
c) at x = 2.3 m, y = 3.4 m
sin(theta) = (3.4 - 2.3)/sqrt( 1.1^2 + 2.3^2)
= 0.431
r = sqrt(1.1^2 + 2.3^2)
= 2.55 m
B = (4*pi*10^-7/(4*pi))*(11*10^-6*34*0.431/2.55^2)
= 2.48*10^-12 T
= 2.48 pT
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