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An infinitely long straight conductor carries a current of 5A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.
  • a)
    4 × 10−20N
  • b)
    8π × 10−20N
  • c)
    4π × 10−20N
  • d)
    8 × 10−20N
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
An infinitely long straight conductor carries a current of 5A as shown...
M.F due to long current carrying wire at 20 cm,

B = 0.5 × 10−5 T
Now,
Force experienced by electron = qVB
Fm = eVB
Fm = 1.6 × 10−19 × 105 × 0.5 × 10−5
= 8 × 10−20 N
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An infinitely long straight conductor carries a current of 5A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.a)4 × 10−20Nb)8π × 10−20Nc)4π × 10−20Nd)8 × 10−20NCorrect answer is option 'D'. Can you explain this answer?
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