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A Uniform Magnetic Field of Magnitude 0

Question 18

Multiple Choice

A uniform magnetic field of magnitude 0.80 T in the negative z direction is present in a region of space,as shown in the figure.A uniform electric field is also present and is set at 76,000 V/m in the +y direction.An electron is projected with an initial velocity v0 = 9.5 × 104 m/s in the +x direction.The y component of the initial force on the electron is closest to which of the following quantities? (e = 1.60 × 10-19C)
A uniform magnetic field of magnitude 0.80 T in the negative z direction is present in a region of space,as shown in the figure.A uniform electric field is also present and is set at 76,000 V/m in the +y direction.An electron is projected with an initial velocity v<sub>0</sub> = 9.5 × 10<sup>4</sup> m/s in the +x direction.The y component of<sup> </sup>the initial force on the electron is closest to which of the following quantities?<sup> </sup>(e = 1.60 × 10<sup>-19</sup>C) A) -2.4 × 10<sup>-14</sup> N B) <sub>+2.4 </sub>× 10<sup>-14</sup> N C) -<sub>1.0 </sub>× 10<sup>-14</sup> N D) <sub>+1.0 </sub>× 10<sup>-14</sup> N


A) -2.4 × 10-14 N
B) +2.4 × 10-14 N
C) -1.0 × 10-14 N
D) +1.0 × 10-14 N

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