Lecture 26 Ohm’s Law: OH-1 Ohm’s Law: OH-2.

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Presentation transcript:

Lecture 26 Ohm’s Law: OH-1 Ohm’s Law: OH-2

Series Circuits: Parallel Circuits:

Example Problem: Identical Bulbs with R Parallel connection: Interpretation: (double area)

Brightness -- Power Compare Brightness

What happens when you “short” a resistor? So with the wire connected: The bulb turns dark

Two Illustrations showing Dissipated Power = Power Delivered Comments: Is dissipation greater for parallel connection? Is dissipation the same for both circuits?

Part 1: RC Circuits

Compare two cases:

Example Problem: 4 Resistors/1 Capacitor After the battery is disconnected:

Part 2: Magnetic Force Electric Force: Magnetic Force:

Answer to previous slide clicker question: Resultant field at bottom is stronger. Stronger field region pushed the wire to weaker region. Intuitively the pattern is strong when the field is wrinkled. Natural tendency is to straighten out the wrinkle. Straight up = wrinkle free.