1. BASIC CONCEPTS
Dr. Mustafa Uyguroglu

2. Electric Circuit
An electric circuit is an interconnection of electrical elements.

3. Systems of UNITS Quantity Basic Unit Symbol Length meter m Mass
kilogram kg
Time
second s
Electric current
ampere A
Thermodynamic Temperature
kelvin K
Luminous intensity
candela cd

4. The SI Prefixes

5. Charge and Current

6. Electric Current

7. Electric Current
The charge transferred between time t0 and t

8. Voltage

9. Power

10. Energy

11. Passive Sign Convention

12. PSC: Example I

13. PSC: Example II

14. PSC: Example III

15. Circuit Elements
Ideal Independent Source: provides a specified voltage or current that is completely independent of other circuit variables
Ideal Independent Voltage Source:

16. Circuit Elements
Ideal independent current source

17. Circuit Elements Ideal dependent voltage source
Ideal dependent current source