Two charges move as shown in figure 6. Charge 1 is -3x10 -6 C and has a velocity
ID: 2258113 • Letter: T
Question
Two charges move as shown in figure 6. Charge 1 is -3x10-6C and has a velocity of 9x106 m/s while charge 2 is 8x10-6C and has a velocity of 4.5x106 m/s. Charge 1 is 0.1 m from the origin (to the left) while charge 2 is 0.2 m from the origin (to the right). What is the total magnetic field at the origin (magnitude and direction)?
figure 6
http://i.imgur.com/IMqz9DG.png
Two charges move as shown in figure 6. Charge 1 is -3x10-6C and has a velocity of 9x106 m/s while charge 2 is 8x10-6C and has a velocity of 4.5x106 m/s. Charge 1 is 0.1 m from the origin (to the left) while charge 2 is 0.2 m from the origin (to the right). What is the total magnetic field at the origin (magnitude and direction)?Explanation / Answer
magnetic field = ?I/2?d
Mnet = M1 +M2
M1 = 2X 10^-7 X [3X10^-6 / 9X 10^6 ]/ 0.1 = 6.66X 10^-19
m2 = 2X10^-7 [8X10^-6 / 4.5X10^6] / 0.2 = 1.77 X10^-18
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