Ohm's Law Quiz

What is the name for the flow of electricity in a circuit?

• Resistance

• Current

• Voltage

• Power

What is the formula for Ohm's Law?

• V = I*R

• V = R+I

• R = V-I

• I = V*R

What is the unit of resistance in a circuit?

• Volts

• Amps

• Watts

• Ohms

What happens if there is too much current flowing through an LED?

• The LED will dim

• The LED will turn off

• The LED will glow brighter

• The LED will be damaged

What is the maximum rated current level for LEDs mentioned in the text?

• 30mA

• 20mA

• 40mA

• 10mA

What value of resistance is needed to limit the current to 20mA with a 9V battery?

• 250 ohms

• 100 ohms

• 600 ohms

• 480 ohms

Where should the resistor be added in the circuit to limit the current flowing through the LED?

• Between the LED and the resistor

• Between the battery and the LED

• Between the resistor and the battery

• none of the above.

What does the colored bands on a resistor indicate?

• Resistance value

• Current rating

• Power consumption

• Voltage rating

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

• Exponential relationship

• Directly proportional

• No relationship

• Inversely proportional

What is the formula for calculating voltage in Ohm's Law?

• V = I + R

• V = I * R

• V = I / R

• V = I - R