1. ELECTRICITY AND MAGNETISM SERIES VS PARALLEL CIRCUITS

2. WARM-UP How is electricity transferred to your home?

3. SERIES CIRCUIT AND PARALLEL CIRCUIT

4. SERIES CIRCUIT: VOCABULARY Circuit –  Components: Battery, wire, resistor (light bulb, etc), switch Electrons – tiny, negatively charged particles Current Voltage Resistance

5. CIRCUITS GIZMO: ACTIVITY A Explorelearning.com

6. SERIES CIRCUIT AND PARALLEL CIRCUIT

7. SERIES CIRCUIT: VOCABULARY Series Circuit – a circuit in which the current flows in a single line, so that all resistance in the circuit has the same current flowing through it.  Components: Battery, wire, resistor (light bulb, etc), switch Electrons – a negatively charged sub atomic particle Current –

8. SERIES CIRCUIT: VOCABULARY Voltage – the energy (in joules) for each coulomb of charge Resistor – an electronic device that opposes (provides resistance) to an electric current; measured in ohms Ohm’s Law – as the voltage increases at a fixed rate the current increases at the same rate; R = V/I

9. SERIES CIRCUIT

11. PARALLEL CIRCUIT

12. SERIES CIRCUIT: VOCABULARY Series Circuit – a circuit in which the current flows in a single line, so that all resistance in the circuit has the same current flowing through it.  Components: Battery, wire, resistor (light bulb, etc), switch Electrons – a negatively charged sub atomic particle Current – the rate of flow of electric charge

13. SERIES CIRCUIT: VOCABULARY Voltage – the energy (in joules) for each coulomb of charge Resistor – an electronic device that opposes (provides resistance) to an electric current; measured in ohms Parallel Circuit – A circuit that provides separate paths for current to travel through each resistor; the same voltage is provided across each resistor

14. DIRECT CURRENT VERSUS ALTERNATING CURRENT http://youtu.be/xyQfrzBfnDU

15. ELECTRICITY VOCABULARY Conductor – a material through which electric current can move easily; metals are good conductors Insulator – a material through which electric current cannot move easily; air, glass, plastic, rubber, and wood are examples of insulators Fuse – a device placed in an electrical circuit that melts when too much current flows through it, thereby breaking the circuit; it protects the other parts of the circuit from damage due to too much current

16. PRACTICE PROBLEMS 1.Given a 1.5 V battery and a resistance of 20 ohms in a circuit, what is the current? 2.A voltage of 24 V is applied to a 150 ohm resistor. How much current flows through the resistor? 3.Determine the resistance of a bulb operating on 95 V if the current flowing through it is 0.78 A. 4.An 800 W microwave oven operates on a household circuit of 120 V, what is the resistance in the microwave? 5.A 26 V battery sustains a constant current through a resistance of 12 ohms, what is the current in the circuit?