10.3 Resistance, Ohm's Law, and the Power Law

What is the unit of resistance?

• Watt

• Ohm

• Ampere

• Volt

Ohm's Law is mathematically represented as:

• R = V / I

• P = I × V

• V = I × R

• I = V / R

In the water analogy, what is equivalent to voltage?

• Flow rate

• Pressure

• Hydraulic resistance

• Power

What is the formula for electric power according to the Power Law?

• P = I / V

• P = V / I

• P = I × V

• P = V × R

What happens to a resistor when enough charge is forced through it at high voltage?

• It glows

• It becomes superconductive

• It cools down

• It breaks

What is the analogy for electrical resistance in the water flow model?

• Pressure

• Power

• Flow rate

• Hydraulic resistance

What is the unit of electric power?

• Ohm

• Volt

• Watt

• Ampere

If a 2.00-ohm resistor has a voltage drop of 1.000V, what is the current?

• 2.000A

• 1.000A

• 0.250A

• 0.500A

What is the relationship between voltage, current, and resistance in Ohm's Law?

• Voltage is the sum of current and resistance

• Voltage is the product of current and resistance

• Current is the product of voltage and resistance

• Resistance is the product of voltage and current

What is the equivalent of electric current in the water flow analogy?

• Power

• Hydraulic resistance

• Flow rate

• Pressure