1 Conductor and Insulator Warm up Will the light bulb light up if the following items are put into the electric circuit? Predict Yes or No. 1. Plastic rod 2. Glass rod 3.Metal rod 4.Pencil - outside 5.Pencil lead (graphite) 6.Eraser Observe what happens. Were your predictions right?

2 Coulomb’s Law Warm Up An unknown charge is located 2 cm from a 0.5 C positive charge. What is the magnitude of the unknown charge if a repulsive force of 1.0 N is experienced between the two charges?

3 Ohm’s Law Warm Up Define each of the following. State the units each is measured in: 1.Voltage 2.Current 3.Resistance 4. A circuit contains a 6-volt power source connected to a light bulb with a resistance of 3 Ohms. Draw a diagram of the circuit. Determine the current flowing through the light bulb.

4 Electric Energy Warm Up A light bulb draws a current of.5 amps on a household circuit of 120V. 1.How much Power does it use? 2.How much Energy does it use in an hour? 3.How much does Cost to run it if energy costs $0.10/kwh?

5 Series Circuit Warm Up Four light bulbs with resistances of 4 Ohms each are connected in series to a 12 V battery. 1. Draw the circuit diagram. 2. What is the Current in each part of the circuit? 3. What is the Voltage Drop across each bulb?

6 Parallel Circuit Warm Up

7 Circuit Design Warm Up Design a simple circuit powered by a 12 Volt DC battery in which two lights (5 ohm each) can be turned on with one switch. Determine the current in the circuit. Include one fuse to protect the circuit

8 Magnetism Warm Up A cross section of a wire carrying electrical current is represented by the cicle below. If the current (flow of positive charges) is flowing toward you, draw the magnetic field lines. 

9 Motor/Generator Warm Up Given a piece of wire and a magnet, describe how you could build a very simple motor and a very simple generator.