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- PHY102 Physics II © Dr.Cem Özdoğan
- 27-4 Calculating the Current in a Single-Loop Circuit
- Two methods used to calculate current;
- Energy Method
- Potential Method
- A real emf device, such as any real battery, has internal resistance to the internal movement of charge.
- When a real emf device is not connected to a circuit, and thus does not have current through it, the potential difference between its terminals is equal to its emf.
- However, when that device has current through it, the potential difference between its terminals differs from its emf.
- Calculating the current in a Single-Loop Circuit:
- Our objective is to calculate the current at each circuit element.