Using Electricity

You need a complete circuit for making electricity

Current: Flow of electrons

• measured with an ammeter
• size of current is the rate at which charge is flowing
• Charge (Q) is measured in Coulombs (C - 6.25x10⁸ electrons p/s)
• Current (I) is measured in Amperes (A)
• I (current) = Q (Charge)/t (time)

Ammeter: measures flow of electrons

• must be placed in a series circuit
• has low resistance, so if in parralel circuit, current would flow through it and not bulb, because current takes the route with the least resistance.

About the Author