1. Science – 11CELECTROMAGNETIM Sir Michael Jerome M. Encina

2. What is Electromagnetism? A branch of study where Electricity and Magnetism are combined. Products of Electromagnetism: -Generator = Motion Magnetism Electricity Change(I) Change(B) -Electric Motor =Electricity MagnetismMotion Change(B) Change(I) -Any Generator can be turned into an Electric Motor and VICE VERSA.

3. Principle: Electro-Magnetic Field A changing magnetic field can induce a changing electric current. Example: Generator Example: Wrap a wire (gold works best) around and iron nail. The coil acts as a current carrier. Once the current enters the spiral it will have an ever changing electric current. ~ I = B ~ *Magnetism: Movement of charges. All bodies are made up of atoms which are constantly moving so all matter has a magnetic property. --Some stronger than others.

4. Electromagnetism Distance affects magnetic force: The greater the distance the less the force. VICE VERSA. DYNAMO -Made out of a loop surrounded by magnets, common for Generator. When an electric current is added to DYNAMO = Electric Motor.

5. TRANSFORMER Voltage Transformer Physical Description Composed of two coils sharing a single IRON core. Use: A device that increase or decreases voltage. Iron Core Primary/ Secondary Coil Bulb

6. Transformer Chart Vp/ Vs = Np/Ns

7. ElectroMagnetic Induction Recall:

8. Electromagnetic Induction Changing magnetic field will create a changing electric current which means you will have an ALTERNATING CURRENT. Vice Versa. Change B  Change I } Generator Change I  Change B } Electric Motor

9. Generator DYNAMO Gears Bulb Manually turning the lever will cause the bulb to light up! Positive and Negative Wires Lever

10. DYNAMO Attaching the positive and negative wires will cause the lever to turn using the electric power from the battery! Gears Battery Positive and Negative Wires Lever Electric Motor

11. Manually Turning a Turbine DYNAMO Positive and Negative wires. Gears Turbine Levers Manually turning the lever will cause the turbine to spin

12. Waves and Optics Sir Michael Jerome M. Encina

14. Waves According to Form. Horizontal line = LINE OF EQUILIBRIUM -where particals are found at rest. Crest – Highest point on a wave. Wavelength Trough – lowest point on wave Amplitude T(period) – Time to finish one cycle. F(frequency) – Number of cycles. λ - Lamda Transverse wave A wave created from particles moving perpendicular from line of equilibrium

15. FM AM Frequency Modulation Amplitude Modulation 1 hz 2 hz 5hz