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Electric Fields and Potential

Electric Potential and Voltage

Electric Potential and Voltage

Electric Fields and Potential Principles
Electric Field and Gauss' Law

Electric Field and Gauss' Law

Electric Fields and Potential Principles
A pith ball of mass 1.0 x 10-5 kg with a positive charge of 4.0 x 10-7 C is slowly pulled by a string a distance of 50 cm through a potential difference of 8.0 x 10-2 V. It is then released from rest and “falls” back to its original position. Calculate:
A charge of 1.2 x 10-3 is fixed at each corner of a rectangle that is 30 cm wide and 40 cm long. What is the magnitude and direction of the electric force on each charge? What is the electric field and the electric potential at the centre?
Determine the magnitude and direction of the electric field at point Z in the diagram to the right due to point charges X = -2.0 x 10-8 C and Y = -2.0 x 10-8 C .
In a system of charges Q1 (+19.9 µC) and Q2 (-8.5 µC ) that are separated by 14 m, find the electric field at a point x located 12 m vertically above a point that is 5.0 m to the left of Q2. Calculate the magnitude of the force that a 2.0 µC charge would
Two point charges, one of charge + 2.5 x 10-5 C and other of charge - 3.7 x 10-5 C, are 25 cm apart. 
dielectric and ferroelectric material
Calculate the magnitude of the electric field in a parallel plate apparatus whose plates are 5.00 mm apart and have a potential difference of 300 V between them.
A ping-pong ball of mass 3.0 x 10-4 kg is hanging from a light thread 1.0 m long, between two vertical parallel plates 10 cm apart, as shown. When the potential difference across the plates is 420 V, the ball comes to equilibrium 1.0 cm to one side of it
An oil drop, whose mass is found to be 4.95 x 10-15 kg, is balanced between two large, horizontal parallel plates 1.0 cm apart, by a potential difference of 510 V, with the upper plate positive.
A 0.10 kg charge of magnitude 3.5 µC is placed in an electric field in a position where the potential is 75 V. The charge is released and it begins moving toward a position where the potential is 175 V. Is the charge positive or negative? Explain. Wha

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