The ratio of the electric to magnetic fields in an electromagnetic wave in free space is always equal to the speed of light.

## What is the ratio of electric and magnetic field?

Hence, we conclude that the ratio of electric field and magnetic field in the EM wave is **equal to speed of light in free space**. Note: In an EM wave, the magnetic energy density is equal to the electrical energy density.

## What is the ratio of magnetic?

The relation between SI unit and CGS unit of magnetic field is given as **1T = 104G**. Thus, ratio of magnetic field at the centre of a current carrying coil of radius R and at a distance of 3 R on its axis is 10√10.

## What is the relation between magnetic and electric?

Electricity and magnetism are two related phenomena produced by the electromagnetic force. Together, they form **electromagnetism**. A moving electric charge generates a magnetic field. A magnetic field induces electric charge movement, producing an electric current.

## What is the ratio of electric and magnetic field between two moving charge?

**2×108**.

## What are the dimensions of electric field?

Or, E = [M^{1} L^{1} T^{–}^{2}] × [I^{1} T^{1}]^{–}^{1} = [M^{1} L^{1} T^{–}^{3} I^{–}^{1}]. Therefore, the Electric Field is dimensionally represented as **[M ^{1} L^{1} I^{–}^{1} T^{–}^{3}]**.

## 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**.

## What is formula of magnetic moment?

The magnitude and direction of the torque is given by the equation. **τ=p×B**. The SI unit for magnetic moment is clearly N m T−1. If an electric current I flows in a plane coil of area A (recall that area is a vector quantity – hence the boldface), the torque it will experience in a magnetic field is given by. τ=IA×B.

## What is meant by magnetic moment?

: a vector quantity that is **a measure of the torque exerted on a magnetic system** (such as a bar magnet or dipole) when placed in a magnetic field and that for a magnet is the product of the distance between its poles and the strength of either pole.

## When A magnetic field is applied on A stationary electron it?

Complete step by step answer:

**A stationary electron cannot make current**. As the electric field is steady, there is no magnetic field. The magnetic field B is defined in terms of force on moving charge in the Lorentz force law. The SI unit of the magnetic field is Tesla.

## What are the similarities and differences between electric and magnetic fields?

Similarities between magnetic fields and electric fields: **Electric fields are produced by two kinds of charges, positive and negative**. Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges). Like poles repel; unlike poles attract.

## What is the symbol of magnetic field?

Index to magnetic terms & units in the SI

Quantity name | Quantity symbol | Quantity symbol |
---|---|---|

magnetic field strength | H | Φ |

magnetic flux density | B | χ_{ρ} |

magnetic moment | m | J |

magnetic susceptibility | χ | M |

## Do magnets have an electric field?

**Magnets only work on motion**

A single particle with electric charge, sitting all by its lonesome, not doing anything interesting, will generate an electric field. … This field, which for the sake of convenience we’ll call the magnetic field, is thus both caused by moving charges and only affects moving charges.