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The voltage is mapped out everywhere in in a 2D-space for a certain distribution of charge. The voltage data is presented in the table to the right and each value is in volts.
(a) Map out these voltage values and sketch a set of equipotential surfaces for V = -400V, -100V, 200V, 500V, 800V and 1100V.
(b) Sketch the electric vector field.
(c) What is an equation for the electric potential as a function of x and y?
(d) What is the electric field as a function of x and y?
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A wire 2.0mm in diameter and 4cmlong is connected to a 12V battery. If the resistivity of the wire is 3.5 x 10^-5 ohm-m; calculate the resistance of wire and its current
after flying for 15 min in a wind blowing 42 kmh at an angle of 28deg south of east an airplane pilot is over a town
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