Understanding Ohm's Law Basics

What is the unit of measurement for voltage?

• Ampere

• Volt

• Ohm

• Watt

What is the formula for Ohm's Law?

Which of the following is the unit of measurement for current?

• Volt

• Ohm

• Ampere

• Joule

If the resistance is 5 ohms and the current is 2 amperes, what is the voltage across the resistor?

• 10 volts

• 7 volts

• 5 volts

• 2 volts

What is the unit of measurement for resistance?

• Volt

• Ohm

• Ampere

• Watt

If the voltage is 12 volts and the resistance is 4 ohms, what is the current flowing through the circuit?

• 3 amperes

• 4 amperes

• 2 amperes

• 6 amperes

Which of the following represents the relationship between voltage, current, and resistance in a circuit?

• Voltage is the product of current and resistance

• Current is the sum of voltage and resistance

• Resistance is the difference between voltage and current

• Voltage is the quotient of current and resistance

If a circuit has a current of 3 amperes and a voltage of 9 volts, what is the resistance?

• 3 ohms

• 6 ohms

• 9 ohms

• 12 ohms

What happens to the current if the voltage is doubled while the resistance remains constant?

• The current is halved

• The current remains the same

• The current is doubled

• The current is tripled

If the resistance in a circuit is 10 ohms and the current is 0.5 amperes, what is the voltage?

• 5 volts

• 10 volts

• 15 volts

• 20 volts