An electron and a proton are moving in circular paths of equal radius with the same speed. If the mass of the proton is about 2000 times that of the mass, then which one of the following will occur?

• A. The centripetal force required for the electron would be about 2000 times greater than the centripetal force required for the proton.
• B. The centripetal force required for the proton will be about 2000 times greater than the centripetal force required for the electron.
• C. No centripetal force is necessary for a charged particle
• D. The same centripetal force will be acting on both the particles because they are rotating in the same circular path.