Understanding Ohm's Law

What is Ohm's Law?

• Ohm's Law is V = I * R.

• Ohm's Law defines power as P = I / R.

• Ohm's Law is I = V + R.

• Ohm's Law states that R = V / I.

State the formula for Ohm's Law.

• V = R / I

• R = V - I

• I = V + R

• V = I * R

If the voltage is 12V and the resistance is 4Ω, what is the current?

• 3A

• 6A

• 2A

• 4A

What unit is used to measure resistance?

• Volt

• Ampere

• Watt

• Ohm

How does increasing resistance affect current, assuming voltage is constant?

• Increasing resistance has no effect on current, assuming voltage is constant.

• Increasing resistance causes current to fluctuate, assuming voltage is constant.

• Increasing resistance decreases current, assuming voltage is constant.

• Increasing resistance increases current, assuming voltage is constant.

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

• The current will double.

• The current will quadruple.

• The current will remain the same.

• The current will decrease.

If a circuit has a current of 3A and a resistance of 6Ω, what is the voltage?

• 6V

• 12V

• 18V

• 24V

What is the relationship between voltage, current, and resistance in a series circuit?

• Voltage is the sum of individual voltages, current is constant, and total resistance is the sum of individual resistances.

• Voltage is the difference of individual voltages, current is the sum, and total resistance is the product of individual resistances.

• Voltage is constant, current varies, and resistance is constant.

• Total voltage is the product of individual voltages, current is variable, and resistance is the average of individual resistances.

Can Ohm's Law be applied to non-linear components? Why or why not?

• Yes, Ohm's Law applies to all components.

• Ohm's Law is applicable to components with variable resistance.

• Ohm's Law can be applied if the component is at a constant temperature.

• No, Ohm's Law cannot be applied to non-linear components.

What is the significance of the constant 'k' in Ohm's Law when dealing with materials?

• The constant 'k' signifies the resistivity of the material in Ohm's Law.

• The constant 'k' is a measure of temperature in Ohm's Law.

• The constant 'k' indicates the current flow in a circuit.

• The constant 'k' represents the voltage in Ohm's Law.