1. EE 1270 Introduction to Electric Circuits Suketu Naik 0 EE 1270: Introduction to Electric Circuits Lecture 2: Ohm's Law Chapter 2 Circuit Elements

2. EE 1270 Introduction to Electric Circuits Suketu Naik 1 Voltage and Current Sources An Ideal Voltage Source An Ideal Current Source An ideal voltage source will provide a constant voltage across its terminals regardless of the current flowing into those terminals An ideal current source will provide a constant current flowing through its terminals regardless of the voltage across those terminals

3. EE 1270 Introduction to Electric Circuits Suketu Naik 2 Voltage and Current Sources ____ Controlled Voltage Source ____ Controlled Current Source ____ Controlled Current Source

4. EE 1270 Introduction to Electric Circuits Suketu Naik 3 Example 2.1: Valid or Invalid?

5. EE 1270 Introduction to Electric Circuits Suketu Naik 4 Example 2.2: Valid or Invalid?

6. EE 1270 Introduction to Electric Circuits Suketu Naik 5 AP 2.1

7. EE 1270 Introduction to Electric Circuits Suketu Naik 6 Ohm's Law R =Electrical Resistance [Ω] v = Voltage [V] i = Current [A] Resistance is created by the atoms in a material through which the electrons are moving

8. EE 1270 Introduction to Electric Circuits Suketu Naik 7 Example 2.4: Circuit Model of a Flashlight Lamp Switch Metal Case Coil Wire

9. EE 1270 Introduction to Electric Circuits Suketu Naik 8 Example 2.5: Circuit Model of a Flashlight Q: What if the curve is nonlinear?