Question

Consider a ring of radius R with the total charge Q spread uniformly over its perimeter. a. What is the potential difference between the point at the center of the ring and a point on its axis a distance 15R from the center? (Use any variable or symbol stated above along with the following as necessary: k.)  

ΔV = V_15R − V₀ =_______________

b. Suppose the ring has a charge of +100 μC and a radius of 0.1m. Imagine placing a 0.1 kg, 100 μC charge in the center of the ring. What will its velocity be after traveling through the above potential difference?___________ m/s c. What is the maximum speed this charge could obtain with an initial position at the center of the ring? To start, find the potential difference between the center of the ring and infinitely far away._____________ m/s Note that the center of the ring is an unstable equilibrium for a positive charge so the charge would need to be initially displaced a small amount from the center. Since the initial displacement can be very close to zero, you can still use zero as an initial position.

Answer 1