Circuits

• Resistance takes potential energy in the electrons passing through and turns it into light or heat.
• The symbol for resistance is R, and the unit for resistace is ohms (Ω)
• The symbol for current is C, and the unit for current is Ampere (A)
• Current is measured using an ammeter
• Potential difference is measured using a voltmeter
• The symbol for votlage (potential energy difference) is V, and the unit for voltage is Volts (V)