An electrometer consists of vertical metal bar at the top of which is attached at hinrod which gets deflected from the bar under the action of an electric charge(fig.). The reading are take non aquadrant graduated indegrees . The length of the rod is l and its massism. What will be the charge when the rod of such an electrometer is deflected through an angle . Make the following assumptions: (a) the charge on the electrometer is equally distributed between the bar & the rod (b) the charges are concentrated at point A on the rod & at point Bon the bar. fig is attached

D Jangid , 6 Years ago

Grade 12