Circuit Parts
What creates a potential difference which acts as a source of pressure to push on electrons and create a current?
Power Source
What is the equation of Ohm's Law?
V = I*R
A roller coaster starts at the top of a hill and rolls down. What happens to its gravitational potential energy?
It decreases and is converted mostly into kinetic energy.
What would the current be in a circuit with a 7.3V power supply and a 5Ω resistor?
1.46A
What is the rule for Voltage and Current in a Series Circuit?
Individual voltages across each resistor sum (add up) to the total voltage of the circuit.
Individual currents across each resistor are the same as the total current of the circuit.
What makes sure electrons move at a safe and manageable rate so things don’t get out of control or break down?
Resistors
What are the 3 variables in Ohm's Law?
V = Voltage, I = Current, R = Resistance
According to the law of conservation of energy, energy can be ______ or ______, but it cannot be created or destroyed.
Transferred or transformed.
What would the resistance value be in a circuit with a power supply of 4.6V and a current of 27A?
0.17Ω
What is the rule for Voltage and Current in a Parallel Circuit?
Individual voltages across each resistor are the same as the total voltage of the circuit.
Individual currents across each resistor sum (add up) to the total current of the circuit.
Every circuit needs to be a complete conductive pathway, connecting the positive end of the power supply to the negative end of the power supply. What is this part of the circuit called?
Pathway
What are the units of each variable in Ohm's Law?
V = Voltage (Volts), I = current (Amps), R = Resistance (Ohms)
A 2 kg ball is held 5 m above the ground. What type of energy does the ball have because of its height?
Gravitational potential energy.
What is the voltage of a series circuit with a current of 3A and a resistance of 8Ω and 4Ω?
36V
What is the equation used to find total resistance in a Series circuit?
RT = R1 + R2 + R3...
What is an example of a common type of resistor?
resistor, toasters, hair dryer
Using Ohm's Law how can you solve for Resistance? What about Current?
V / I = R
V / R = I
If a moving object slows down because of friction, where does most of its kinetic energy go?
Thermal energy (heat).
What is the current of a parallel circuit with a voltage of 2V and a resistance of 3Ω and 6Ω?
1A
What is the equation used to find total resistance in a Parallel circuit?
1/RT = 1/R1 + 1/R2 + 1/R3...
What makes a parallel circuit a parallel circuit? How is it different from a series circuit?
A parallel circuit has multilple pathways. While a series circuit has 1 pathway.
What would the voltage be in a circuit with a resistor of 1.9Ω and a current of 2.8A?
5.32V
A roller coaster starts with 1,000 J of gravitational potential energy. If 200 J is converted to thermal energy due to friction, how much kinetic energy remains at the bottom?
800 J.
What is the current of a parallel circuit with a voltage of 36V and a resistance of 2Ω, 6Ω,18Ω?
26A
Can a Circuit Table be used to solve for variables in a combination / complex circuit? Why or why not?
No! The rules are specific to series and parallel circuits. They can be used together.