# What is the direction of the electric field at the center of the circle?

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Let the distance of each charge from the central charge is same. Thus the magnitude of the force is proportional to the charge. Thus the net direction of electric field at center is along the line connecting centers of upper side and lower side in upward direction.

## What is the electric field at the center of a circle?

The field intensity at the center of a charged object, assuming it is in equilibrium, is zero. The charges repel each other so they are on the outside shell of the wire. Since all the charge arrows symmetrically point into or out of the center of the wire, at the center the net electric field is zero.

## What is the direction of the electric field at the dot?

The direction of the electric field at the dot is towards D.

## What is the electric field at the center of a circle of radius r?

Nine negative charges, each of magnitude Q are arranged symmetrically around the circumference of a circle of radius R. What is the electric field at the center of the circle? If equal charges are arranged symmetrically around a circle then the net electric field at the centre of the circle would be zero.

## What is the electric potential at the center of the uniformly charged ring?

Electric potential at the centre of the ring is the same as the potential due to a point charge. Whereas the electric field is 0 at the centre of the ring because the electric field at the half side of the ring cancels out the other half.

## Which is the direction of the net force on the charge at the lower left?

Since the forces are repulsive, the net force will be away from the center of the square. The charge on the bottom left will be expelled largely by the charge on the top right, which is a double positive charge. Therefore, the direction of the net force on the charge on the lower left is South West, as shown by B.

## What determines the direction of the electric force between two charges?

The direction of the force vector depends on the sign of the charges. If the charges are the same, the force points away from the other charge. If the charges have different signs, the force points toward the other charge((Figure)).

## At which point or points is the electric field zero in Figure 1 )( a )?

The electric field is zero at two points along the x axis; one such point is to the right of the -2q charge and the other is to the left of the +4q charge.

## What is the formula for electric field?

The electric field E is defined to be E=Fq E = F q , where F is the Coulomb or electrostatic force exerted on a small positive test charge q. E has units of N/C. The magnitude of the electric field E created by a point charge Q is E=k|Q|r2 E = k | Q | r 2 , where r is the distance from Q.

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