[SOLVED] really weird one 1. The problem statement, all variables and given/known data A small sphere that carries a charge q is whirled in a circle at the end of an insulating string. the angular frequencyy of rotation is omega [w]. What average current does this rotating charge represent? 2. Relevant equations I = dQ/dt; w = 2(pi)/T; x[t] = Acos[wt +C]; 3. The attempt at a solution; this question doesnt make sense to me. q never changes - it just travels in a circle - so dq/dt =0;there is one charge going in a circle, but not axially which would represent charge in a conduit. is this a picture of alternating current? [we haven't gotten to that yet].