A uniform electric field of 142 V/m runs in the +x direction. A charge of -7 mic

Question

A uniform electric field of 142 V/m runs in the +x direction. A charge of -7 micro-coulombs moves 0.52 meters in the -y direction. What is the charges change in electric potential energy in Joules? A point charge lies at the origin (x = y = 0 m). At the point x = 8 m. y = 8 m, the electric potential produced by the point charge is -2 times 10^4 V What is the charge in micro- coulombs? Include sign. A point charge of +10.6 micro-coulombs lies at the origin (x = y = 0 m). Another charge of +8.1 micro-coulombs lies at x = 0.38 m, y =0.34 m. What is electric potential energy of the charge at x = 0.38 m, y =0.34 m in Joules?

Explanation / Answer

here,

4)

electric feild , E is pointing in the +x direction

and

charge moves in y direction

as the moment of charge is perpendicular to the direction of electric feild

then the charge change in electric potential energy is zero

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