What are the units for voltage?
Volts
How many Volts would it take to push 1 Amp through a resistance of 1Ω?
1 volt
We use _______ in our everyday technology
electricity
What symbol does this picture below represent?
A resistor
What is the voltage of a circuit with a current of 10 A and a resistance 5 ohms
50 V
What are the units for Resistance (R)
Ohms
What voltage is needed to cause a 59A current flow through a 100Ω resistor?
5900 Volts
A _________ is a material that slows down the flow of current, but does not completely stop it.
Resistor
What type of circuit is in the following picture?
Parallel circuit
What is the resistance of a circuit with a voltage of 100V and a current 20A
5 ohms
What does the abbreviation for A stand for?
Amperes or Amps
Resistance is 54 Ω and the voltage is 432 V. Find I.
8 amps
The type of circuit that allows current to flow through is a(n) __________ circuit
The type of circuit that DOES NOT allows current to flow through is a(n) __________ circuit
1. Closed
2. Open
Type of Circuit?
Series Circuit
What is the current of a circuit with a voltage of 60 V and a resistance 15 ohms
4A
What are the relationships in Ohm's law between?
Current (I)
Voltage (V)
Resistance (R)
Which of these solutions is approximately the closest if the current flowing through a 25Ω resistor connected across 475 V.
A. 10.5 amps
B. 0.5 amps
C. 18.5 amps
D. 4.5 amps
C. 18.5 amps, since 475/25 = 19 amps
__________ is how fast charges flow through a circuit
Current
If you remove a light bulb from the picture below, would the light bulb become dimmer or brighter?
It'll become brighter, since there's one less resistor reducing the current's flow.
What is the current measured at the ammeter (A)?
6A
Write down all the formulas in Ohm's law
V = I x R
I = V/R
R = V/I
In the circuit below resistors R1 and R2 are in series and have resistances of 5 Ω and 10 Ω, respectively. The voltage across resistor R1 is equal to 4 V. Find the current passing through resistor R2 and the voltage across the same resistor.
V2 = R2 I2 = 10 (0.8) = 8 V
A _____________ circuit allows multiple pathways for the current to follow
A _____________ circuit allows the current to follow only one path
1. Parellel
2. Series
Draw where you should put the 2 ends of a voltmeter to correctly measure the voltage across R2
What is the total current in this circuit?
6.67 A