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NEETPhysicsMagnetic Effects of Current

Statement (I) : A uniform electric field and a uniform magnetic field are pointed in the same direction. If an electron is projected in the same direction the electron velocity will decrease in magnitude. Statement (II) : Two infinite long parallel wires are carrying current in the same direction. The magnetic field at a point midway between the wires is zero. Statement (III) : No net force acts on a rectangular coil

Options

  1. AStatements I, II and III are true.
  2. BStatements I and II are true, but statement III is false.
  3. CStatements II and III are true, but statement I is false.
  4. DStatements I and III are true, but statement II is false.

Correct answer

A. Statements I, II and III are true.

Step-by-step solution

B will not effect electron and E will reduce electron velocity as electric field on it is in direction opposite to field. So (I) is correct B _ net = ₀ i 2 r + ₀ i 2 r =0 So, (II) is correct No net force acts on rectangular loop placed in magnetic field. So (III) is correct.

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