Di Electrics to Electrical Power

• Dielectric. An electrical insulating material that can be placed between the plates of a capacitor.
• Dielectric. Used to store electrical energy by creating an electric field within the material.
• Current. Any motion of charge from one region to another
• Current. It is the electron flow.
• Current. The rate at which electric charge pass through a conductor.
• Alessandro Volta. Italian Physicist
• Alessandro Volta. Pioneer of Electricity and Power
• Alessandro Volta. Credited as the inventor of electric battery
• Alessandro Volta. Invented the Voltic Pile in 1799
• Battery. Device that converts chemical energy into electrical energy.
• Resistance. Ratio of the voltage applied to the electric current which flows through it.
• Georg Simon Ohm. German Physicist
• Georg Simon Ohm. Investigated the relationship between current and voltage.
• Resistance did not change with voltage.
• Resistor. A passive electrical component that creates resistance in the flow of electric current
• Resistivity. A property that describes the extent to which a material opposes the flow of electric current through it.
• Resistivity. Acts as a constant of proportionality for the relationship of resistance to the length.
• Resistance increase with temperature
• The more area of the cross section of the wire, the less is the resistance
• The less area, the more is the resistance
• As the length increases, the resistance increases and vice-versa
• Ohms Law. The Voltage across a conductor is directly proportional to the current flowing through it, given a constant resistance.
• Ohmic Material. Substance that obeys Ohm’s Law
• Ohmic Material. The relationship between the voltage and applied across it and the current passing through it is linear.
• Non-ohmic Material. Substance that do not obey Ohm’s Law
• Non-ohmic Material. The relationship between voltage and current in non-ohmic material is not linear.
• Electrical Power. The rate at which energy is delivered to the external circuit
• Conventional Current


  Flow of Current: - ← +
• Electron Flow


  Flow: - → +
• Electric charge and electric current are directly proportional.
• Time and electric current are inversely proportional.
• Resistance and voltage are directly proportional.
• Resistance and current are inversely proportional
• Length and resistance are directly proportional.
• The area of cross section is inversely proportional to the resistance.