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Magnetic Field Produced by Electric Currents Practice Questions

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Magnetism Learning Material
Tutorial IDTitleTutorialVideo
Tutorial		Revision
Notes		Revision
Questions
16.2Magnetic Field Produced by Electric Currents

Magnetic Field Produced by Electric Currents Revision Questions

1) Two parallel wires carrying currents of I1 = 5A and I2 = 10A flowing in the same direction are placed 10 cm apart as shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Magnetic Field Produced by Electric Currents

What is the magnitude and direction of magnetic field at the point A which is 5 cm on the left of the 5A current?

  1. 3.33 × 10-5 T clockwise
  2. 10-4 T anticlockwise
  3. 3.33 × 10-5 T anticlockwise
  4. 1.047 × 10-4 clockwise

Correct Answer: C

2) A circular loop of radius 4 cm containing 100 turns has a magnetic field of 0.2mT at its centre when some current Is flowing through it. What is the value of current In amps?

  1. 127 A
  2. 12.7 A
  3. 1.27 A
  4. 0.127 A

Correct Answer: D

3) A 2A wire is bent in the shape shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Magnetic Field Produced by Electric Currents

What is the magnetic field at centre of the loop if its radius is 12 cm?

  1. 3.33 × 10-6 T
  2. 1.38 × 10-5 T
  3. 3.76 × 10-5 T
  4. 7.13 × 10-6 T

Correct Answer: B

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