Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Chapter 34

What is current The flow of electrons in a wire
To make a simple circuit you need A Battery , a bulb and some wires
Insulators substances that do not allow electricity to travel through them
Conductors substances that allow electricity through them
To measure current use an ammeter
Current is measured in units called Amps
The symbol for current is I
Bulbs in series are connected one after the other in the circuit
Bulbs in paralled are connected in separate circuits opposite each other
if one bulb blows in a series circuit they all go out
A battery pushes current through the wires
Voltage is also called Potential difference
Voltage is measured in Volts
the symbol for a battery is a long line followed by a short line. the long line represents this end of the battery.. positive
Resistance is the amount by which a wire tries to stop current going through it
Resistance is measured using a device called an ohmmeter
units of resistance are ohms
There are two types of resistor Fixed and variable
ohms law states that V/I = R
a diode is a device that allows current to flow through in one direction only
light emitting diodes are used instead of bulbs because they use very little electricity
LDR stands for Light dependent resistor
a thermistor is a device made of material that reduces its resistance when the temperature of the device changes
Power is the rate at which work is done
Created by: PHealy
Popular Physics sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards