1. The potential difference or voltage, V across two points is defined as energy, E dissipated or transferred by coulomb of charge, Q that moves through the two points.
Therefore:
Potential difference = Electrical energy dissipated
Charge
V= E /Q
2. Current is the rate of charge flow. Therefore, the total charge flows through the two points is given as:
Q = It
3. Since the energy dissipated or transferred is given by:
E= VQ
Therefore, the relationship between E, V,I and t can be written as:
E = VIt
4. From Ohm’s law, V =IR, therefore,
E = IR × It
E = I²Rt
5. From I = V / R => E = V
No comments:
Post a Comment