AIIMS2014PhysicsMagnetic Effects of Current
A long straight wire carries 10 A d.c. current an electron travels perpendicular to the plane of this wire at a distance 0.1 ~m with velocity 5.0 10^6 ~m ~s ⁻¹ . Force acting on the electron due to current in wire is
Options
- Azero N
- B0.6 10⁻¹⁷ ~N
- C2.4 10⁻¹⁷ ~N
- D2.2 10⁻¹⁷ ~N
Correct answer
A. zero N
Step-by-step solution
Force on the electron F =-e( v B ) . As electron is travelling in a plane perpendicular to the plane of wire, so angle between v and B is either 0^ or 180^ and 0^ or 180^ =0 .