find the force on test charge,electric field and electric potnsiol at the center of clock having a charge q at each hour(total charge on clock =12q).can we deduce electric field from the potensiol ,if not why,if yes how.
find the force on test charge,electric field and electric potnsiol at the center of clock having a charge q at each hour(total charge on clock =12q).can we deduce electric field from the potensiol ,if not why,if yes how.