1. CIRCUITS

2. COMPARING ELECTRICITY TO PLUMBING PLUMBING ANALOGYPLUMBING ANALOGY PLUMBING ANALOGY PlumbingElectricity Flowrate (cm ³/s ) Current (Coulombs/s = Amp) Water pressure (Force/Area = Energy / Volume) Voltage (Energy / Charge = Volts) Resistance (Ohm Ω ) WorkWattage Volts x amps = watts

3. CIRCUITS Important Equations I = Current (A) V = Voltage (V) R = Resistance (Ω) P = Power (W) Name of LawFormula Ohm’s Law I = V/R R = V/I V = IxR Joule’s Law P = IxV V = P/I I = P/V

4. TYPE OF CIRCUITS SERIESPARALLEL

5. HOW TO MEASURE VOLTAGE AND CURRENT MULTIMETER IS THE TOOL WE USE TO MEASURE VOLTAGE AND CURRENT IN A CIRCUIT.

6. PARTS OF A MULTIMETER Slots Dial Screen

7. MEASURING VOLTAGE WHEN MEASURING VOLTAGE THE MULTIMETER MUST BE IN PARALLEL IN THE CIRCUIT. multimeter

8. MEASURING VOLTAGE WHEN MEASURING VOLTAGE MAKE SURE THE BLACK LEAD IS IN THE COM SLOT. MAKE SURE THE RED LEAD IS PLUGGED IN THE VOLT SLOT. MAKE SURE THE DIAL IS ON THE HIGHEST SETTING FOR VOLTAGE AND MOVE TO A LOWER SETTING IF NEEDED.

9. MEASURING CURRENT WHEN MEASURING CURRENT THE MULTIMETER MUST BE IN SERIES IN THE CIRCUIT. multimeter

10. MEASURING CURRENT WHEN MEASURING CURRENT MAKE SURE THE BLACK LEAD IS IN THE COM SLOT. MAKE SURE THE RED LEAD IS PLUGGED IN THE AMP SLOT. MAKE SURE THE DIAL IS ON THE HIGHEST SETTING FOR AMPERAGE AND MOVE TO A LOWER SETTING IF NEEDED.