Current Electricty Flashcards
What is electric potential difference?
It’s the measure of how much energy the current has
What is current?
A measure of how many electrons pass a point in a circuit
What is resistance?
Resistance is the measure of how much current has been implied 
What is the symbol, units and device used to measure electric potential difference? 
Symbol= V
Units= V-volts
Device= voltmeter
What is the symbol, units, and device use for current? 
Symbol= I
Units= A-Amps
Device= Anmeter
What is the symbol, units, and device used to measure resistance? 
Symbol= R
Units = Ohms ♎️
Device= Ohmmeter
How are ammeters connected in a circuit? 
By Series
How are voltmeters connected in a circuit?
By parallel
When you charge your phone, The charging clock gets warm why does this happen?
The resistance in the charger creates heat
How diffuses in circuit breakers protect our homes from electrical fires?
Too much current can create too much heat, causing a fire, fuses and circuit breakers are designed to break the current if they sent that too much current is being used this can happen if too many devices are plugged in or if a short circuit is made 
If you plug in an old string of decorative lights conducted in series and none of the lightbulbs lights does this mean all the lightbulbs are burned out?
No, the bulbs are probably not all burned out in series circuit if one ball goes out they all go out
How do you know the lights in your home are wired parallel? 
We know that the lights in our house is wired parallel because we could turn off one light and still have the others on
What happens to the current in a circuit if more resistors are added
One more resistors are added the currents in a circuit decreases
What are the four factors that will increase resistance in a wire?
One length increases resistance increases.
Two diameter decreases resistance increases.
Three as temperature increases resistance increases.
Four insulators have more resistance. 
Describe one nonrenewable and two renewable methods for electricity production
Sunlight and wind are renewable
coal nonrenewable 
Why is it dangerous for someone who went to touch a live wire?
Water lowers the resistance of a human body, the lower, the resistance, the more can flow through the body
What choices can you make that would help reduce your electricity bill
We can use more efficient appliances, and we can choose to use most of our electricity during off peak 
What choices can you make that would help reduce your electricity bill
We can use more efficient appliances, and we can choose to use most of our electricity during off peak 
Why is electricity more expensive in the middle of the day in the summer but in the morning evening winter
Winter gets dark fast so we need to light up our homes
Summer, we use air conditioning 
