Formulas
Can U Fix it
Circuits
Double Jeopardy
Vocabulary
100
Voltage/Current = ___ a. Energy b. Power c. Resistance d. Voltage
What is c. Resistance
100
Circle the letter of each sentence that is true about what happens when more branches are added to a parallel circuit. a. The current has more paths to follow, so the resistance decreases. b. the current has fewer paths to follow, so resistance increases.
What is a. The current has more paths to follow, so the resistance decreases.
100
If you wanted to measure the current through some device in a circuit, how would you connect an ammeter? a. In series b. In parallel
What is a. In series
100
Name 2 sources of electrical energy.
What is Battery, Generator, or Power Plant?
100
In a __________ circuit, there is only one path for the current to take.
What is series?
200
Voltage x Current = ___ a. Energy b. Power c. Resistance d. Voltage
What is b. Power
200
Suppose you have a number of light bulbs connected together in a series circuit. What happens if one of the bulbs burns out?
What is if one of the bulbs burns out, they all go out?
200
If you wanted to measure the voltage in a parallel circuit, how would you connect the voltmeter? a. In series b. In parallel
What is b. In parallel
200
Name 3 necessary features of a circuit?
What is a device ran by electrical energy, a source of electrical energy, and conducting wires.
200
An _____________ is a device used to measure current.
What is ammeter?
300
Power x Time = ___ a. Energy b. Power c. Resistance d. Voltage
What is a. Energy
300
Suppose you have a number of light bulbs connected on a parallel circuit. What happens if one of the bulbs burns out?
What is if one of the bulbs burns out, the other bulbs stay on?
300
If different parts of a circuit are on separate branches with many paths, the circuit is called a(n) ________________. a. series b. parallel
What is b. parallel
300
Adding more paths to a parallel circuit will increase the ____________________.
What is current?
300
In a _________________ circuit, there are several paths for current to take.
What is parallel?
400
A 10-A current is in the heating coils of a toaster. If the resistance of the coils inside the toaster is 12 Ω, what must the voltage be? C x R = V
What is 120 volts?
400
As more light bulbs are added to a series circuit, the bulbs become dimmer. Why?
What is extra lights bulbs add extra resistance?
400
Most household circuits are _____________________. a. series b. parallel
What is b. parallel
400
If the resistance stays the same, when you increase the voltage, you ______________ the current. V/R = C
What is increase?
400
A _______________ is a device used to measure voltage, or electrical potential energy difference.
What is a voltmeter?
500
In a circuit, there is a 0.8-A current in the bulb. The voltage across the bulb is 4.0 V. What is the bulb’s resistance? V / C = R
What is 5 ohms?
500
What devices are added to prevent circuits from overheating?
What is a fuse or circuit breaker?
500
The voltage in most household circuits is __________. a. AC b. DC
What is b. DC
500
Rearrange this equation V/C = R so that it finds voltage instead of resistance.
What is C x R = V?
500
The rate at which energy is transformed from one form to another is known as ______________ .
What is power?
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