The work done =qdV=0.

Answer. Answer: Since, the surface is equipotential, the work done will be zero as the work done in moving a charge from one point to another point is the product of the charge and potential difference between the points.

Answer. Answer: An equipotential surface is one in which all the points are at the same electric potential. If a charge is to be moved between any two points (say from point A to point B) on an equipotential surface, according to the formula dW=q⋅dVdW=q⋅dV, the work done becomes zero.

Answer. When a charge is moved from one point to another along some equipotential surface, it is true that the work done on the charge by the electric field is 0.

The potential difference is defined as the work done to move a unit charge from one point to another.

Answer. We have to take potential difference as work done per unit charge to bring it from a point 0 to 12V. Hence, the work done in moving a charge of 2c across the two points having a potential difference is 12V is 24J.

When charges move in an electric field, something has to do work to get the charge to move. To move q, we apply a force to just barely overcome the repulsive force from Q. Let’s work it out: The amount of work done is force times distance, W = F ⋅ d W = F /cdot d W=F⋅dW, equals, F, dot, d .

The work required to move the charge from A to B, done some external force against the electric field, is just the opposite, q[V(B)-V(A)]. W = k q Q ( 1 a − 1 1.25 2 + a 2 ) .

Electric potential (V) at a point is defined as the work done (U) required to bring a charge (q) from infinity to that point divided by the charge: V = U/q. With this definition, V = 0 at infinity.

Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.

W = 2 J. Thus, the work done in moving a charge of 2 micro coulomb from point A to B is 2J.

The work done in taking a point charge from P to A is WA​ from P to B is WB​ and from P to C is WC​.

Things that have the same charge push each other away (they repel each other). This is called the Law of Charges. Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each other.

Calculate the force of attraction according to F = k * q1 * q2 / d2.

In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The acceleration g=F/m1 due to gravity on the Earth can be calculated by substituting the mass and radii of the Earth into the above equation and hence g= 9.81 m s-2. …

Gravity (or the acceleration due to gravity) is 9.81 meters per second squared, on the surface of Earth, because of the size of Earth and the distance we are on its surface from its center. Throughout space, gravity actually is constant.

The gravitational constant is the proportionality constant that is used in the Newton’s Law of Gravitation. It is also known as Newton’s Constant. The value of the gravitational constant is the same throughout the universe. The value of G is different from g, which denotes the acceleration due to gravity.

9 g’s

G is called the universal gravitational constant because its value is constant and doesn’t change from place to place.

The value of G is maximum at the poles. This is due to the closeness between the poles and the center of the earth.