Given below are two statements: Statement I: The electric force changes the speed of the charged particle and hence changes its kinetic energy: whereas the magnetic force does not change the kinetic energy of the charged particle. Statement II: The electric force accelerates the positively charged particle perpendicular to the direction of electric field. The magnetic force accelerates the moving charged particle along the direction of magnetic field. In the light of the above statements, choose the most appropriate answer from the options given below:

Question

Given below are two statements: Statement I: The electric force changes the speed of the charged particle and hence changes its kinetic energy: whereas the magnetic force does not change the kinetic energy of the charged particle. Statement II: The electric force accelerates the positively charged particle perpendicular to the direction of electric field. The magnetic force accelerates the moving charged particle along the direction of magnetic field. In the light of the above statements, choose the most appropriate answer from the options given below: (A) Both Statement I and Statement II are correct. (B) Both Statement I and Statement II are incorrect. (C) Statement I is correct but Statement II is incorrect (D) Statement I is incorrect but Statement II is correct

Tardigrade Admin · Accepted Answer

Electric field can change speed and kinetic energy but magnetic field can not change speed triangle KE. Because magnetic force is always perp to velocity.

Both Statement I and Statement II are correct.

Both Statement I and Statement II are incorrect.

Statement I is correct but Statement II is incorrect

Statement I is incorrect but Statement II is correct

Electric field can change speed and kinetic energy but magnetic field can not change speed △KE. Because magnetic force is always ⊥ to velocity.

Electric field can change speed and kinetic energy but magnetic field can not change speed $△ K E$ . Because magnetic force is always $⊥$ to velocity.