PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
In an electric-field-line diagram, exactly 12 lines originate on isolated conducting sphere A and exactly 4 lines terminate on isolated conducting sphere B. No other charges are present, and every field line begins or ends on one of the two spheres.
Describe the sign of the net charge on each sphere and determine the simplest integer ratio ∣qA∣:∣qB∣ of their charge magnitudes.