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NEET UG PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
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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:
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:
View answer and explanation
Correct option: C
Statement I is correct but statement II is incorrect
Statement I is correct, as electric force can change kinetic energy, while magnetic force cannot. Statement II is incorrect because electric force accelerates a positive charge *along* the field, and magnetic force accelerates it *perpendicular* to both velocity and field.
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