Electric Charge!
What are the two types of Electric charge?
Positive and Negative Charge.
What is the flow of electric charge?
Electric Current
What is the simple relationship he found among voltage,current,and resistance?
Ohm's Law
A 110 volt wall outlet supplies power to a strobe light with a resistance of 20 ohms. How much current is flowing through the strobe light?
V= IR
V=110 V; R= 20 OHMS
110V= I(20)
divide by 20.
I= 5.5 Amp.
What is a current-carrying wire wrapped around an iron core?
electromagnet
What is a positively or negatively charged Atom?
ION
What is the flow of electric charges continuously through a closed conducting loop?
Circuit
What is a series circuit?
A circuit that has only one path for electric current to follow
A CD player with a resistance of 50 ohms has a current of 0.2 amps flowing through it. Sketch the circuit diagram and calculate how many volts supply the CD player.
V = ?
R = 50 ohms; I = 0.2
V = IR
V = 50 ( 0.2)
ANSWER: V = 5 Volt.
What is any device that converts electric energy into kinetic energy?
motor
What is the imbalance of electric charge on a object?
Static charge
What is the measure of how much electrical potential energy each electron can gain?
Voltage
What is a circuit that has more than one path for the electric current to follow?
Parallel circuit
A 120-volt power source supplies a lamp with a resistance of 200 ohms. What is the current flow of the circuit?
V = 120 VOLTS;R = 20 OHMS;I = ?
V = IR REPLACE VARIABLE WITH VALUES
120 VOLTS = I (200)
DIVIDE BOTH SIDES BY 200
ANSWER: I = 0.75 Amp
What is light emitted by colliding atoms?
Aurora
What is the force that all charged objects exert?
Electric force.
What is the measure of how difficult it is for electrons to flow through a material?
Resistance
What is the rate at which electrical energy is converted?
Electric power
What is the formula to find the resistance in a series circuit?
Rt= R1 + R2 + R3 + R4
What uses a magnetic field to turn motion into electricity?
Generator
What is a force that is exerted on each other at a distance from electric charges?
Electric field!
What is the unit for electrical resistance?
Ohm
A kilowatt is how many watts and of what power?
1,000 watts of electrical power
What is the formula to find resistance in a parallel circuit?
1/Rt= 1/R1 + 1/R2 + 1/R3 + 1/R4