YOU ARE TAKING A TEST TODAY!

• THERE WILL BE A REVIEW• THEN YOU WILL TAKE THE TEST• YOU WILL GET 1-HOUR TO TAKE THE TEST• THAT IS PLENTY OF TIME TO FINISH• UNLESS YOU WASTE TOO MUCH TIME ON THE

REVIEW…

ELE – A ELE – B Review-These slides are review. -Your sub will click through the slides when you are ready to move on, just let them know-You can take notes, BUT you CANNOT use them on the test-Just go through these slides and pay attention.-Test starts AFTER the review, so its up to you and your behavior to decide how long the review takes.-NO, you cannot start the test early

ELE - A • What is Potential Difference – It is measured in Volts – (V)– It is electrical energy..– Provided by a battery…– Which converts chemical energy (there are

chemicals inside a battery) into electrical energy– This causes a….

ELE - A

• … a Current– Flow of electrically charged particles – Measured in Amperes – Amps (A)– No Current, no lights!– Delivers voltage to circuit components.– Those components provide…

ELE - A • …Resistance– Anything that uses current and voltage provides

Resistance– It is measured in Ohms– (Ω)– A Resistor is a resistor– A light-bulb is a resistor- Brightness of a light bulb depends on…

ELE - A

• … Power– Energy used by a component for a period of time.– Measured in Watts– (W)– Different wattage of bulbs (60 W, 100 W etc.)

means the blub is using more current and/or voltage.

Formulas… They are on the wall…

Remember what you did in your lab!• I measured current and

voltage• I made a table• I made a graph• I found the slope of the

graph…• What did that slope

mean?• Why does the slope mean

that?

Volta

ge (V

)Current (A)

ELE – B – Analyze Circuits• Remember – • … to follow the Current. It leaves the battery

and must complete the circuit (circle) in any direction in order for current to flow.

• … “Voltage Drop” just means the amount of voltage a resistor uses.. Check your VIRP chart

• Let’s Practice

ELE – B – Analyze Circuits - Series• Series Circuit – Go to next slide when video is done

ELE – B – Analyze Circuits - Parallel

Formulas for Equivalent Resistance

• Series

• Parallel• + + + …

• They are on the wall

ELE – B – Analyze Circuits• Remember – • This symbol means voltmeter. It

measures potential difference in volts• The ends represent the leads of the

multimeter you used in labs.• This symbol means ammeter. It

measures current in amps• The ends represent the leads of the

multimeter you used in labs.

CLEAR YOUR DESK of ONLY…• Formulas – NO NOTES• Calculator – (seriously? You don’t already have

one?)• Separate sheet of paper to do work –

(seriously? You’re gonna do it all in your head?)

• Your Sub will come around and check each person then give you the codes…

Codes

•ELEA1•ELEB1• When you are finished, stay SILENT for

the other people still testing…