Ohms Law Quiz take up What are the

Ohm’s Law Quiz – take up What are the coordinates for the two points? A(0, 0) B(0. 8, 4) What is the difference in the y coordinates between A and B? RISE 4 – 0 = 4 B V What is the difference in the x coordinates between A and B? RUN 0. 8 – 0 = 0. 8 A Tuesday December 4, 2007 A SLOPE = RISE = 4 RUN 0. 8 A SNC 1 D | A. Manaktola SLOPE = 5 OHMS

Ohm’s Law Quiz – take up 2) An ammeter measures how many coulombs of charge passes through a point per second. TRUE 3) The above circuit is a series circuit, and the voltmeter and ammeter are all connected in series. FALSE 4) 1 Ohm = 1 Volt/Ampere TRUE Tuesday December 4, 2007 SNC 1 D | A. Manaktola

Series & Parallel Circuits Tuesday December 4, 2007 SNC 1 D | A. Manaktola

Today’s Circuit Which light bulb will be brighter: A or B? A Tuesday December 4, 2007 B SNC 1 D | A. Manaktola

Video Clip Tuesday December 4, 2007 SNC 1 D | A. Manaktola

In series… A In parallel… B 6 V 3 V The higher the voltage drop across a bulb, the brighter the bulb will shine. Suppose the battery is 6 V. What will be the voltage drop across each bulb? Tuesday December 4, 2007 SNC 1 D | A. Manaktola

Today’s Circuit Which light bulb will be brighter? A B B 6 V 3 V Bulbs connected parallel do notthe “share” voltage As more bulbs arein added in series, voltagethe drop is drop. Theamong voltage across the battery is the same as “shared” thedrop loads. Therefore, the more bulbs you the drop each across of the loads add, voltage the dimmer of each the bulbs will be. in the circuit. Tuesday December 4, 2007 SNC 1 D | A. Manaktola

Let’s Try it! Tuesday December 4, 2007 SNC 1 D | A. Manaktola

Summary V = Voltage drop, or Electrical Potential Difference ** Note: We are assuming the loads in the circuit are identical Voltage Drop Current Series Circuit V across each load is LOWER than V across the battery. Vtotal = V 1 + V 2 + V 3 … Parallel Circuit V across each load is THE SAME as V across. The current flowing through each load is THE SAME. As more loads are added, the current flowing through each load DECREASES. Itotal = I 1 + I 2 + I 3 … Itotal = I 1 = I 2 = I 3 … Tuesday December 4, 2007 Vtotal = V 1 = V 2 = V 3 … SNC 1 D | A. Manaktola

Stay tuned… To find out what happens to RESISTANCE in series and parallel circuits Tuesday December 4, 2007 SNC 1 D | A. Manaktola