# Magnetic repulsion between 2 wires?

• taylor.simon
In summary, the problem involves finding the distance of separation between two wires, one carrying a current of 30.0 A and the other carrying a current of 90.0 A, so that the top wire is held in place by magnetic repulsion. The equation used is F1 / L = mg / L = (4pi x 10^-7) I2 / 2pi x distance ), which is used to find the magnetic force per length and the gravitational force per mass. The goal is to find the distance that makes these two forces equal.
taylor.simon

## Homework Statement

A wire with a weight per unit length of 0.040 N/m is suspended directly above a second wire. The top wire carries a current of 30.0 A and the bottom wire carries a current of 90.0 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion.

is this the right equation can can someone show me how to use it just leave the answer out please

## Homework Equations

F1 / L = mg / L = (4pi x 10^-7) I2 / 2pi x distance )

## The Attempt at a Solution

hi taylor.simon!

(have a pi: π and try using the X2 icon just above the Reply box )

find the magnetic force per length, then the magnetic force per mass …

that has to equal the gravitational force per mass …

what do you get?

## 1. What is magnetic repulsion between 2 wires?

Magnetic repulsion between 2 wires is a phenomenon where two wires carrying electric currents in the same direction will push away from each other due to their magnetic fields.

## 2. How does magnetic repulsion between 2 wires occur?

Magnetic repulsion between 2 wires occurs due to the interaction of their magnetic fields. When electric currents flow through the wires, they create magnetic fields around them. These magnetic fields interact with each other, causing the wires to repel.

## 3. What factors affect the strength of magnetic repulsion between 2 wires?

The strength of magnetic repulsion between 2 wires depends on the magnitude of the electric current flowing through the wires, the distance between the wires, and the materials of the wires.

## 4. Is magnetic repulsion between 2 wires a significant force?

Magnetic repulsion between 2 wires can be a significant force, especially when the electric currents in the wires are large. This force is often used in technologies such as electromagnets and maglev trains.

## 5. Can magnetic repulsion between 2 wires be utilized in any practical applications?

Yes, magnetic repulsion between 2 wires has many practical applications. It is used in various technologies such as motors, generators, and magnetic levitation systems. It also plays a crucial role in the operation of many electronic devices.

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