Physics II

• It is a measure of how much electric energy or pressure is in a circuit or an electric field.

  Voltage
• It is a rate of flow of charge.

  Current
• It is an opposition to the flow of current?

  Resistance
• Conductors have a low resistance.
• Insulators have a high resistance.
• The factors affecting resistance are length, cross-section-area, temperature, and the type of material.
• In Length, it states that the longer the length, the higher its resistance. And the shorter the length, the lower its resistance.
• In Cross-sectional-area, it states that the fatter the material, the lower its resistance, and the thinner the material, the higher its resistance.
• In temperature, it states that the higher the temperature, the higher its resistance, and the lower the temperature, the lower its resistance.
• In type of material, the higher the conductivity, the lower its resistance, and the lower the conductivity, the higher the resistance.
• It is a cycle or path along which current flows?

  Circuit
• The two types of circuit are Series Circuit and Parallel Circuit.
• The unit for current is Amper/s (A)
• The symbol for current is I.
• The relationship between voltage, current, and resistance in an electrical circuit is Ohm's Law
• Power is the rate of which energy can be transferred.
• The unit for power is Watt/s (W)
• The unit for charge is Cuolomb (C)
• The unit of resistance is Ohm/s (Omega)