Formative 1.8: Resistors and Resistance

What is the multiplier for a resistor with a red color band?

• 10^1

• 10^2

• 10^3

• 10^4

What is the tolerance of a resistor with no color band?

• 5%

• 10%

• 20%

• 15%

What does the first digit in the resistor color code represent?

• Multiplier

• Tolerance

• First digit of the value

• Second digit of the value

What is the color code for a resistor with a value of 10^9?

• White

• Gray

• Violet

• Blue

What is electrical resistance?

• A measure of how much a material resists the flow of current

• A measure of how fast electrons move through a conductor

• A measure of the voltage applied to a circuit

• A measure of the power consumed by a device

What causes resistance in a metal?

• The smooth surface of the metal

• The collisions of electrons with vibrating atoms and impurities

• The absence of electrons

• The high temperature of the metal

How does temperature affect resistance?

• Resistance decreases with temperature

• Resistance remains constant with temperature

• Resistance increases with temperature

• Temperature has no effect on resistance

What happens to the energy lost by electrons as they bump into other atoms?

• It is absorbed by the atoms

• It is converted into light or heat

• It is stored in the electrons

• It is lost to the environment

What would happen if electrons moved without bumping into anything?

• The flow of electrons would be very small

• The flow of electrons would be very large

• The resistance would increase

• The resistance would remain the same

How many Ohms is this resistor?

• 22

• 220

• 2200

• 22,000