A planet has double the mass of the earth and double the radius. The gravitational potential at the surface of the Earth is and the magnitude of the gravitational field strength is . The gravitational potential and the gravitational field strength on the surface of the planet are:
Important Questions on Fields (HL)
Four charges that are equal in magnitude are put at the vertices of a square, as shown in the diagram
Where is the electric potential zero?
Shown are four arrangements of two unequal positive point charges separated by various distances. Which two arrangements results in the electric potential energy?
The figure shows two oppositely charged parallel plates a distance d apart.
A proton is launched from the negative plate with initial speed u. The proton just reaches the positive plate. Which graph represents the variation of the speed v of the proton with distance x from the negative plate?
An amount of positive charge Q is placed uniformly on a large plane surface. A small positive point charge q placed a perpendicular distance r from the surface experience a force F.
What is the magnitude of the electric field at the position of the small charge q?
Two charges M and N are separated by a certain distance, as shown in the diagram.
Graphs I, II, and III show the variation of electric potential With distance x from the centre of charge M.
Which of the possibilities below applies o the case of two equal and opposite charges?
