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Indian Navy Pilot Magnetic Effects of Electric Current — practice questions

Explore 1 free Magnetic Effects of Electric Current questions in Indian Navy Pilot Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Magnetic Effects of Electric Current questions and exercises with answers

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A straight conductor of length 0.5 m carries 2 A at right angles to a 0.4 T magnetic field. The force on it is:Read the answer and worked solution →

Worked practice questions

A straight conductor of length 0.5 m carries 2 A at right angles to a 0.4 T magnetic field. The force on it is:

  1. 0.04 N
  2. 40 N
  3. 4 N
  4. 0.4 N
Show answer and solution

Correct answer: D. 0.4 N

1. The force on a current-carrying conductor in a magnetic field is F = B·I·L·sin θ. 2. The angle between current and field is 90°, so sin θ = 1. 3. Substitute the given values: F = 0.4 × 2 × 0.5 × 1. 4. F = 0.4 N. 5. Option A is off by a factor of ten; C and D overshoot by powers of ten. 6. So the correct force is 0.4 N. _Source: syllabus Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_

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