electromagnetism guide
... 98. Alternating current reverses or alternates its direction in a pattern. 99. Electric generators produce alternating currents that reverse direction 120 times every second. 100. But when devices such as batteries supply electrical current, they provide direct current derived from chemical energy. ...
... 98. Alternating current reverses or alternates its direction in a pattern. 99. Electric generators produce alternating currents that reverse direction 120 times every second. 100. But when devices such as batteries supply electrical current, they provide direct current derived from chemical energy. ...
Magnetism Notes - Brookwood High School
... materials NOT magnetic because electron pairs cancel out their magnetic fields ► Iron, nickel, and cobalt – have atoms with unpaired electrons whose magnetic fields are not entirely canceled out – so have magnetic properties ► Iron has four unpaired electrons so each iron atom is a tiny magnet ...
... materials NOT magnetic because electron pairs cancel out their magnetic fields ► Iron, nickel, and cobalt – have atoms with unpaired electrons whose magnetic fields are not entirely canceled out – so have magnetic properties ► Iron has four unpaired electrons so each iron atom is a tiny magnet ...
