COE & DC

• Electric Current:

  rate of flow of charges
• Coulomb:

  One coulomb is the amount of electric charge that passes through a point in one second when there is a constant current of one ampere.
• Potential Difference:

  The potential difference between two points in a circuit is defined as the amount of electrical energy per unit charge that is converted to other forms of energy when charges pass from one point to the other.
• The volt:

  One volt is the potential difference between two points in a circuit when one joule of electrical energy is converted to other forms of energy as one coulomb of charge passes through from one point to the other.
• Electromotive Force:

  of a source is defined as the amount of electrical energy per unit charge that is converted from other forms of energy to drive charges around a complete circuit.
• Resistance:

  of a conductor is defined as the ratio of the potential difference across it to the current flowing through it
• The Ohm:

  is the resistance of a conductor when a potential difference of one volt across it causes a current of one ampere to flow through it.
• Ohm’s Law:

  states that the current through a metallic conductor is proportional to the potential difference across its ends under constant physical conditions like temperature