Answers to Electric Current Test

Circuits Exercises

Hello guys!!!! Remember that we are having a test tomorrow so better read your notes tonight because it will help you have great test results. Back to what this blog is all about, Ms. K discussed the hand-outs she distributed last friday. The answers are posted in her slides. Afterwards, she gave us the answers to the exercises but the solutions are not given because she wants us to solve it ourselves. As a feedback, not giving out the solution is a good way to practice what we have learned because it will help us understand the topic more.
The following is from one of our hand-outs. I posted this because this what we need to remember and understand so that we can solve easy and difficult problems.

SERIES AND PARALLEL CIRCUITS

TYPE
OF CIRCUIT

1) SERIES

CURRENT is constant throughout the entire circuit.

POTENTIAL Individual potential drops add up to the total potential drop.
DIFFERENCE

RESISTANCE R_total= R₁+ R₂+ ....

2) PARALLEL

CURRENT Individual currents add up to the total current.

POTENTIAL Potential difference is constant across all parts of the circuit.
DIFFERENCE

RESISTANCE 1/R= 1/R₁+ 1/R₂+ ....

This table summarizes the basics about the series and parallel circuits so if you master this table, solving problems are not as hard as you think it is.

The next scribe is KEITH!!!!!!!!!!!!!!!!!!!!!

Good luck and Godspeed......(",)!!!!!

Resistivity and Combination Circuits

Resistance and Circuits

May 31, 2007

Things we did in class:



- got our test paper back and corrected it.



- Ms.K handed out a booklet called Kirchoff's Contribution that talks about electric potential, electric potential difference, how to determine the resistance, current, voltage, power for series, parallel, combined networks, Kirchoff's Current Law and kirchoff's Voltage Law.



- a cheat sheet called "Series And Parallel Circuits" that talks about the differences between a series circuit and parallel circuit.



then Ms.K gave us a work sheet to do to test our knowledge and skills..to see if we are really listening and understanding the teachings that she just gave us....~~save by the bell! got only number one on the board...will finish the rest tomorrow...^____^



THE NEXT SCRIBE FOR TOMORROW IS...



JAMIE!!! MWUHAHA!

Test Corrections/Series & Parallel Circuits

New unit

Today in class we went over the questions that we were assigned yesterday in our text books. We got a new sheet on current and another sheet on Cavendish and the first electric meter. Also today in class we got two study guides to do in class. we went over Ch.22 study guide today.
Allen will scribe tomorrow.

Physics Class on May 28, 2007

New Topic: Electric Current

Today's class started off with a video on "Electric Current."

KEY CONCEPTS IN THE VIDEO:

- VOLTAGE = ENERGY (JOULES) / CHARGE (COULOMBS)

- CURRENT proportional to VOLTAGE DIFFERENCE

- CURRENT (AMPHERES) = VOLTAGE DIFFERENCE / RESISTANCE

- I = V / R

- DIRECT CURRENT: A current travelling in ONE direction.

- ALTERNATING CURRENT: A current alternating back and forth.

** Basically the video was an overview on series and parallel circuits.

For the rest of class we were assigned the following:

Read PGS. 469 - 475
Do Practice Problems:
PG. 471 - 472
#1 - #4
PG. 474 - 475
#5 - #8

The next scribe is: GEAR321 (AKA. Eddie)