Ohm's Law Quiz

What does the letter (I) represent in Ohm's Law?

• Voltage

• Current

• Resistance

• Wattage

Using Ohm's Law to find Voltage, what equation needs to be used?

• I / R

• R / I

• I x R

• V / I

If "E" is used in Ohm's Law, what letter is it replacing?

• I

• A

• R

• V

A circuit that has a resistance of 4 ohms and an amp draw of 3 amps, what would the voltage of the power source be?

• 12 volts

• 7 volts

• 9 volts

• 1.33 volts

When we think of voltage in a circuit, voltage is referred to as ________, the pushing force that moves current.

• pressure

• resistance

• capacitance

• inductance

What tool is needed to measure voltage, current, and resistance?

• Flow Meter

• Refractometer

• Test Light

• Multimeter

When the resistance in a circuit goes up, the current increases as well.

• True

• False

When measuring current, how does the meter need to be hooked up?

• Red to Black/Black to Red

• Parallel

• Red to Red/Black to Black

• Series

If a lamp has 240 ohms of resistance and the source voltage is 120 volts, what will the current measure?

• 28,800 amps

• 2 amps

• 0.5 amps

• 0.05 amps

If a lamp has a resistance of 240 ohms and the current for the circuit measures 0.958 amps, what is the voltage of the power source?

• 120 volts

• 230 volts

• 251 volts

• Barely any voltage