A charge monkey took his three favorite point charges, qA = -39.7 nC, qb= 24.5 μC, and qc = 8.5 nC, to a nearby electric field that had the nicely mapped out equipotential contours you see in the figure. The charge monkey spent a pleasant afternoon kicking the little charges around the equipotential landscape along various trajectories, three of which are shown. Assume the monkey kicked the charges one a a time. How much did the electric potential energy change as the monkey kicked each charge along its indicated trajectory? A. AUE B. AUE= C. AUE = HJ 3. 3 HJ +15 V /+15 V +5 V -15 V -5 V OV

An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign the same as the metal sphere) are shot towards the metal sphere using a paint gun. The paint droplets repel and move towards a grounded object that needs to be painted. In the figure below, an electrostatic paint sprayer has a 0.25 m diameter metal sphere at a potential Vsphere of 23 kV that repels paint droplets onto a grounded wall.  a) What charge is on the sphere? b)    What charge must a 0.14 mg drop of paint have to arrive at the object with a speed of 12 ms?

The graph below shows an arrangement of charges and the equipotential lines associated to it. The red charges are positive and the blue charges negative. B 1 2 Eel= A:start J. B:start 2 Indicate in the graph: a) the direction of the field at point A by drawing an arrow with the appropriate direction. Instructions for drawing arrows are given below. A:end b) the direction in which a negative test charged dropped at point B would move. (The particle is initially at rest). Instructions for drawing arrows are given below. Instructions for drawing arrows: Arrows can be drawn on the graph by dragging and dropping the markers provided to mark the start and end points of the arrow (alternatively markers can be moved using the TAB and ARROW keys on your keyboard). For example, to draw the arrow at point A use the markers labelled 'A:start' and 'A:end'. To indicate the direction at point B use the markers labelled 'B:start' and 'B:end'. To draw the arrows, click the 'Draw arrows' button. If you…

a +15nC charge is at the origin.  How much farther from the charge is the 2000V equipotential surface than the 3000V equipotential surface