Physics
Grade-10
Easy

Question

No force acts on a current-carrying conductor when it is placed

  1. Perpendicular to the magnetic field
  2. Parallel to the magnetic field
  3. Far away from the magnetic field
  4. Inside a magnetic field

hintHint:

  • Force is F=qvBsinA
  • when A=0 so sinA=0 

The correct answer is: Parallel to the magnetic field


    • We know that when a current carrying conductor is placed in a magnetic field, a force is exerted on the conductor which can make the conductor move. The direction of the motion of the conductor represents the direction of the force acting on it. The direction of the force acting on the current carrying conductor is perpendicular to the direction of current as well as the magnetic field which we can find out by using Fleming's left-hand rule. But, no force acts on the conductor when it is kept parallel to the magnetic field.
    • Force is F=qvBsinA
    • when A=0 so sinA=0 ,hence F= 0
    • hence force is zero when Parallel to the magnetic field
     
     

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