Chapt. 25Electric Potential195e) If a point charge of chargeq >0 is put on thex-axis exactly atx= 0, what is the netforce on it? What would happen to the point charge if it were slightly displaced along thex-axis fromx= 0? Assume that the point charge is constrained to move along thex-axis:for instance it may be thought of as a bead on a frictionless wire. Other than the force ofconstraint assume that the only the Coulomb force due to the ring acts on the bead.f) Assume the point charge from part (e) is displaced by a vanishingly small amount fromx= 0 along thex-axis and initially has zero velocity. The point charge has massm. Derivethe point charge’sVELOCITYatx=±∞. Express the velocity in terms ofqring,q,b,andm?025 qfull 00250 2 3 0 moderate math: 2 charges on a lineExtra keywords:This needs fixing up in light of the similar question in ch.23.3. Consider two chargesq1andq2on thex-axis at, respectively, pointsx1andx2:x2>x1. Thezero of potential is at infinity.
This is the end of the preview.
access the rest of the document.