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Q9. (a) What is the potential between two points situated 10 cm and 20 cm from a 3.0 μC point charge?
(b)To what location should the point at 20 cm be moved to increase this potential difference by a factor of two?
A 0.500 cm diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 40.0 μC charge on its surface. What is the potential near its surface?
A test charge of +2 μC is placed halfway between a charge of +6 μC and another of +4 μC separated by
10 cm.
(a) What is the magnitude of the force on the test charge?
(b) What is the direction of this force (away from or toward the +6 μC charge)?
Two horizontal parallel plates are conducting in a vacuum.
A small particle of mass 4 × 10-12kg, carrying a positive charge of 3.0 × 10-14C is released at A close to the upper plate. What total force acts on this particle?
How should I calculate the angle by which two wheels are rotated driving the vehicle around the circle. I do know circle radius, wheel radius, car length and distance between wheels. Thanks
A small charged sphere of mass 2.1 × 10-4kg, suspended from a thread of insulating
material, was placed between two vertical parallel plates 60 mm apart. When a potential
difference of 4200 V was applied to the plates, the sphere moved until the thread made an angle
of 6o to the vertical.
i) Calculate the charge on the sphere and determine the number of charged particles on the sphere.
A small charged sphere of mass 2.1 × 10-4kg, suspended from a thread of insulating
material, was placed between two vertical parallel plates 60 mm apart. When a potential
difference of 4200 V was applied to the plates, the sphere moved until the thread made an angle
of 6o to the vertical.
i) Draw a free body diagram indicating all the forces acting on the sphere.
ii) State and explain the origin of each of the forces acting on the sphere
A small charged sphere of mass 2.1 × 10-4kg, suspended from a thread of insulating
material, was placed between two vertical parallel plates 60 mm apart. When a potential
difference of 4200 V was applied to the plates, the sphere moved until the thread made an angle
of 6o to the vertical.
i) Draw a free body diagram indicating all the forces acting on the sphere.
ii) State and explain the origin of each of the forces acting on the sphere
iii) Calculate the charge on the sphere and determine the number of charged particles on the sphere.
A charged oil drop of radius 1.3 × 10-6m is prevented from falling under gravity by the vertical electric field between two horizontal parallel plates charged to a difference of potential of 8340 V. The distance between the plates is 16 mm, and the density of oil is 920 kgm-3. Calculate the magnitude of the charge on the drop
Define (i) electric field strength, (ii) electric potential.
How are these quantities related?
