Electrical elements: Voltage, current and resistance

1. What does Voltage represent in the water tank analogy?
a. The flow of water
b. The size of the tank
c. The pressure of water
d. The temperature of the water

• a. The flow of water
  

• b. The size of the tank
  

• c. The pressure of water
  

• d. The temperature of the water

2. What is the unit of measurement for Current?

• a. Volts
  

• b. Amperes
  

• c. Ohms
  

• d. Coulombs

3. Which statement about Resistance is true?

• a. Resistance increases current flow.
  

• b. Resistance is measured in Amperes.
  

• c. Resistance is the opposition to current flow.
  

• d. All materials have zero resistance.