ECE 1270 Introduction to Electric Circuits 0 Lecture

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

Voltage and Current Sources 1 An Ideal Current Source An Ideal Voltage 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 ECE 1270 Introduction to Electric Circuits Suketu Naik

Voltage and Current Sources ____ Controlled Voltage Source ____ Controlled Current Source ECE 1270 Introduction to Electric Circuits 2 ____ Controlled Current Source Suketu Naik

Example 2. 1: Valid or Invalid? (a) (b) (c) (d) ECE 1270 Introduction to Electric Circuits 3 (e) Suketu Naik

Example 2. 2: Valid or Invalid? (a) (c) (b) (d) ECE 1270 Introduction to Electric Circuits 4 Suketu Naik

AP 2. 1 ECE 1270 Introduction to Electric Circuits 5 Suketu Naik

Ohm's Law 6 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 ECE 1270 Introduction to Electric Circuits Suketu Naik

Example 2. 4: Circuit Model of a Flashlight Coil Wire Metal Case 7 Lamp Switch ECE 1270 Introduction to Electric Circuits Suketu Naik

P 2. 9, P 2. 11 ECE 1270 Introduction to Electric Circuits 8 Suketu Naik