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# How do you find the magnetic field between two parallel wires?

## How do you find the magnetic field between two parallel wires?

To determine the net magnetic field midway between the two wires, we must determine the magnetic field as a result of each wire and then take the sum of those two vectors. Since the electric current runs in opposite direction in both wires, to determine the total magnetic field we need to subtract the two vectors.

## How 2 parallel wires would affect each other if they have currents in the opposite direction?

Similarly, if you have two parallel wires with current traveling in opposite directions, as you do in the series circuit, then the magnetic fields of the two wires will be traveling in the same direction at the point at which they intersect, and therefore repel each other.

What happens when the current of the two wires are in opposite direction?

If wires carry current in the opposite direction, the wires will repel each other.

What is the direction of force between two parallel wires carrying currents in opposite direction?

Note: Note that two straight current carrying wires parallel to each other will not always repel each other. It depends on the direction of the currents in both the wires. If the directions of the currents are opposite, then the wires will repel each other.

### What is the force between two parallel wires?

The official definition of the ampere is: One ampere of current through each of two parallel conductors of infinite length, separated by one meter in empty space free of other magnetic fields, causes a force of exactly 2 × 10−7 N/m on each conductor.

### Why do parallel currents attract?

Why? Two parallel wires carrying currents in the same direction attract each other due to magnetic interaction between two wires carrying currents because the current in a wire produces a magnetic field and the magnetic interaction is of attractive nature when current in the two parallel wires is in the same direction.

When two wires have current in same direction then force is?

Thus, when two parallel wires carry current in the same direction, they exert equal and opposite attractive forces on each other.

Will two wires carrying current in the same direction be pulled toward each other or repelled apart?

The direction is obtained from the right hand rule. Note that two wires carrying current in the same direction attract each other, and they repel if the currents are opposite in direction.

#### Why do 2 parallel conductors exert force on each other?

Since both wires have currents flowing in the same direction, the direction of the force is toward each other. Whether the fields are identical or not, the forces that the wires exert on each other are always equal in magnitude and opposite in direction (Newton’s third law).

#### How do you calculate the force between wires?

Magnetic force between wires equation d is the distance between the wires; F / L is the force per unit length acting on each wire; μ0 is the permeability of free space which have constant value μ0 = 4 * π * 10^(-7) [T * m / A] .

Is the magnetic force between two parallel conductors attractive?

(b) A view from above of the two wires shown in (a), with one magnetic field line shown for each wire. RHR-1 shows that the force between the parallel conductors is attractive when the currents are in the same direction. A similar analysis shows that the force is repulsive between currents in opposite directions.

Where does the magnetic field cancel between two parallel wires?

In the region outside of the two wires, along the horizontal line connecting the wires, the magnetic fields partially cancel. Figure 5.38 Two wires with parallel currents pointing in opposite directions are shown. The direction of the magnetic field due to each wire is indicated.

## How are the currents of two parallel wires related?

Figure 5.36 Two parallel wires have currents pointing in the same direction, out of the page. The direction of the magnetic fields induced by each wire is shown. Note that the magnetic influence of the wire on the left-hand side extends beyond the wire on the right-hand side.

## How to calculate magnetic force between two currents?

Two current-carrying wires at given locations with currents out of the page. Strategy Each wire produces a magnetic field felt by the other wire. The distance along the hypotenuse of the triangle between the wires is the radial distance used in the calculation to determine the force per unit length.