# What is the formula of current in magnetic field?

## What is the formula of current in magnetic field?

The magnitude of the force on a wire carrying current I with length L in a magnetic field is given by the equation. F=ILBsinθ where θ is the angle between the wire and the magnetic field.

## What is the length of magnetic field?

The unit of force is Newtons (N), the unit of current is Amperes (A), the unit of length is meters (m), and the unit of magnetic field is Teslas (T). Magnetic Force Formula (Current-Length) Questions: 1) A copper wire is carrying a current of 4.00 A through a uniform magnetic field with magnitude 2.20 T.

What is the relation between magnetic field and current?

The magnetic force on a current in a magnetic field = current x displacement across the magnetic field. This force can be predicted using the right hand rule. When two currents are directed through magnetic fields in the same direction, they attract. When they are directed in the opposite directions, they will repel.

How is magnetic field related to current?

### What is the relationship between the magnetic force and the length of a conductor with current in the magnetic field?

For a wire exposed to a magnetic field, τ=NIABsinθ describes the relationship between magnetic force (F), current (I), length of wire (l), magnetic field (B), and angle between field and wire (θ).

### What is magnetic field of electric current?

Magnetic Effect of Electric Current – A magnetic field is a force field that is created by magnetic dipoles and moving electric charges, and it exerts a force on other nearby moving charges and magnetic dipoles. Magnetic Field is a vector quantity because it has both magnitude and direction.

What is the relation between magnetic field and current and distance?

The magnetic field at point P due to the element dl is found to be proportional to the current in the wire, and the length of dl and is inversely proportional to the square of the distance R . The magnitude of this field is given by, ⇒|d→B|=μo4πIdlsinθR2.

What is the relation between magnetic field and length of the wire?

The magnetic field from a wire decreases with distance from the wire. Instead of the field being proportional to the inverse square of the distance, as is the electric field from a point charge, the magnetic field is inversely proportional to the distance from the wire.

## What is electric field formula?

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge. The formula of electric field is given as; E = F /Q.

## How is current measured?

The electric current in one part of a circuit is measured with an ammeter, which gives a reading in ampere. To take the measurement, a gap is made in the circuit and the ammeter is connected into that gap, so that the charged particles moving around the circuit must pass through the meter.

Why is current proportional to magnetic field?

The magnetic field in space around an electric current is proportional to the electric current which serves as its source, just as the electric field in space is proportional to the charge which serves as its source.

What are the 3 formulas in Ohm’s law?

3-4: A circle diagram to help in memorizing the Ohm’s Law formulas V = IR, I = V/R, and R= V/I. The V is always at the top.

### What is current measured in?

ampere
The SI unit of electric current is the ampere (A), which is equal to a flow of one coulomb of charge per second.

### What is the relationship between magnetic field and current?

How does length of conductor affect magnetic field?

How can magnetic field increase if length of the wire is increased? Since magnetic field decreases when current is decreased and if length is increased,resistance wud increase and current will decrease.

What is the relationship between electric current and magnetic field?

Electricity and magnetism are closely related. Flowing electrons produce a magnetic field, and spinning magnets cause an electric current to flow. Electromagnetism is the interaction of these two important forces.

## What is the relation between magnetic field current and distance in the case of straight current carrying conductor?

Answer: Magnetic field strength is inversely proportional to the distance from the wire i.e. \begin{align*}B \propto \frac{1}{r}\end{align*}, greater the distance from the current carrying conductor, weaker will be the magnetic field.

What is relation between magnetic field and current?

How is electric field related to current?

Electric fields cause charges to move. It stands to reason that an electric field applied to some material will cause currents to flow in that material. For an amazingly wide range of materials, an empirical rule called Ohm’s law gives the following relation between current density and applied electric field: J = σ E .

### What are two methods for measuring current?

There are two main ways to measure current – one is based on electromagnetics and is associated with the early moving coil (d’Arsonval) meter, and the other is based on the main theory of electricity, Ohm’s law.