How to buy a House in Australia. Rules apply on who is allowed to purchase property, although any Australian Citizen or Permanent Resident of Australia can a buy a house in Australia without any restrictions.
The ohm is defined as an electrical resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force.
Short answer: The ohm is the unit of measure for impedance, which is the property of a speaker that restricts the flow of electrical current through it. Typical speakers have impedance ratings of 4 ohms, 8 ohms or 16 ohms.