Description: Electric Fields: Crash Course Physics #26, Electric Charge and Electric Fields, Electric Field Due To Point Charges - Physics Problems, GCSE Physics - Electric Fields #25, Electric field definition | Electric charge, field, and potential | Physics | Khan Academy
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The electric field is a component of the electromagnetic field . It is a vector field and is generated by electric charges or time-varying magnetic fields , as described by Maxwell's equations . The concept of an electric field was introduced by Michael Faraday .
The electric field at a given point is defined as the (vectorial) force that would be exerted on a stationary test particle of unit charge by electromagnetic forces (i.e. the Lorentz force ). A particle of charge would be subject to a force .
Its SI units are newtons per coulomb (N⋅C −1 ) or, equivalently, volts per metre (V⋅m −1 ), which in terms of SI base units are kg⋅m⋅s −3 ⋅A −1 .