Electricity I
A complete unbroken path that charges flow through.
What is an Electric Circuit?
When many particles disrupt the flow of electricity
What is resistance?
Difference in electric potential energy per charge between two points in a circuit
What is voltage?
Three 6 ohm resistors are in series. What is the total resistance?
What is 18 ohms?
R total = 6+6+6 = 3*6 = 18 ohm
Unit for power
What is a watt?
Iron, copper, and silver are all examples of...
What are conductors?
Buildup of charges on an object
What is static electricity?
Loss of static electricity being transfer to another object
What is static discharge?
If electricity costs 10 cents per Kw*Hr, how much does it cost to run a 60 w bulb for one hour?
Energy = Power * Time
What is $0.60?
60W = 0.060KW
0.060KW * 1h= 0.060 KWh
0.060 KWh * 10 cents = 0.60 cents
Unit for flow of electricity
What are volts?
Devices that melt as they get hot; they stop current to an area
What are fuses?
Material that restricts or blocks the flow of electricity
What is an insulator?
All electrical devices contain ___ ___
What are electric circuits?
You use a 1200W dryer for 15 min and a 100W bulb for 1hr. How much electricity did you use?
Energy = Power * Time
What is 400 watt - hours?
1200 W 15min => 1200W * 0.25h = 300Wh
100 W 1H => 100W * 1h = 100WH / 400Wh = 0.400KWh
The unit for current.
What are amperes?
The always flowing of a charge through a material.
What is an electric current?
Switches that will bend away from circuits that heat up and can be reset
What are circuit breakers?
Strength of the electric field of a charged particle becomes greater as the distance...
What is decreases?
3 amps of current passes through a bulb of 1.5 ohms. What is the voltage of the battery?
V = I * R
What is 4.5V?
V = 3A * 1.5 = 4.5V
The unit for resistance
What are ohms?
A type of circuit that has multiple paths and objects.
What is a parallel circuit?
Electric current where all devices are on a single line
What is a series circuit?
These 4 factors determine the resistance of a wire.
What are temperature, diameter, length, and material?
If a microwave oven draws 11A when plugged into 120V, what is the power rating?
P = I*V
What is 1.32 kW?
I = 11A : V = 120V
P = I * V
11A * 120V = 1,320 W
= 1.32 KW
Ohm's Law
What is Resistance= voltages divided by current?