The equipotential lines in a region of electric field are shown in the diagram below. For each path indicated below, what is the work done by the electric field in moving a charge q = +4.8  10-7 C along that path? Here V0 = +50 V. (a) from A to B WAB = (in J) (b) from A to C WAC = (in J) (c) from A to D WAD = (in J) (d) from D to C WDC = (in J)

The equipotential lines in a region of electric field are shown in the diagram below. For each path indicated below, what is the work done by the electric field in moving a charge q = +4.1 × 10-7 C along that path? Here Vo = +140 V. -Vo -2Vo (a) from A to B W = AB = -3Vo (b) from A to C WAC (c) from A to D WAD = (d) from D to C WDC J J J A B D 3Vo 2V0 Vo OV

The figure below shows equipotential contours in the region of space surrounding two charged conductors. 15.0 V 10.0 V OV 30.0 V 35.0 V 45.0 V 20.0 V 25.0 V Find the work WAB in electron volts done by the electric force on a pr that moves from point A to point B. Similarly, find WAC, WAD, and W, (Assume the proton starts and stops at rest. Enter your answers in e' HINT (a) w AB ev (b) WAC ev (c) WAD eV

The equipotential lines in a region of electric field are shown in the diagram below. For each path indicated below, what is the work done by the electric field in moving a charge q = +6.4 x 107 C along that path? Here Vo = +110 V. -Vo -2V -3V (a) from A to B WAB = (b) from A to C WAC = (c) from A to D WAD= (d) from D to C WDC = J A D 3V 2V0 Vo OV

Problem 3: Figure below shows equipotential contours in the region of space surrounding two charged conductors. Find a) the work WAB done by the electric force on a proton that moves from point A to point B. Similarly, find b) WAC c) WAD d) WAE Express all of your results in eV units (electron-volts). 30.0 V 20.0 V ov 40.0 V 50.0 V D 60.0 V 70.0 V 90.0 V E

For the following situations, consider moving a positive charge from very far away to the origin along the y-axis. For which situation would you do the most work?

How much work does the electric field do in moving a +7.2 µC charge from ground (0 V)to a point where the potential is +58V higher? Pay attention to magnitude and sign.