Question

Using the concept of force between two infinitely long parallel current-carrying conductor, define one ampere of current

Answer 1

Magnetic force on current-carrying conductor:

1. A magnetic field is created when an electric current flows through a conductor.
2. The resulting field exerts a force on a magnet positioned near a conductor.
3. This same magnet also applies an equivalent and inverse force toward the current-carrying wire.
4. Mathematical representation:

$\overrightarrow{\mathrm{F}}=\mathrm{I}\overrightarrow{\mathrm{L}}\times \overrightarrow{\mathrm{B}}$

Here,

“F” is the magnetic force.

“I” is the current.

“B” is the magnetic field.

“L” is the current-carrying wire of length.

Ampere meter:

1. An electrical gadget that measures current in amperes is used to measure the electrical current here on burden by attaching it in series to the load is called an ampere meter.
2. Since it has no resistance, the measured circuit has always been unlikely to be affected.

One ampere of current:

One ampere of current is expressed as the proportion of current that flows through two incredibly long parallel cables such that the wires remain distanced by $1\mathrm{m}$ and create an attractive force of $2\times {10}^{-7}\mathrm{N}/\mathrm{m}$.

The two requirements that must be examined are as follows:

1. Wires should have a small circular cross-section.
2. The wires must go into the vacuum.