Liang is working with an electrical circuit. she replaces a straight electrical wire with a coiled wire. what is liang most likely trying to do? increase the strength of the magnetic field when current flows through the circuit decrease the strength of the magnetic field when current flows through the circuit increase the current that flows through the wire when the circuit is active decrease the current that flows through the wire when the circuit is active

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c