0
amp = ampere
mA = milliampere (or "milliamp" for short)
1000 mA = 1 A = 1 amp
1 amp
1 ton ac amp
It is one amp current used over one hour. A ten amp hour battery can supply 1/2 an amp for 20 hours, 1 amp for 10 hours, etc.
Only if your amp is rated to handle a 1 ohm load. If it's not you WILL... fry your amp.