Understanding Basic Electricity

What is Ohm's Law?

• V = R / I

• V = I / R

• Ohm's Law is V = I * R.

• V = I + R

What is Ohm's Law?

• V = R / I

• V = I / R

• Ohm's Law is V = I * R.

• V = I + R

State the formula for Ohm's Law.

• R = V - I

• I = V + R

• V = R / I

• V = I * R

If a circuit has a voltage of 12V and a resistance of 4Ω, what is the current?

• 3A

• 2A

• 4A

• 6A

What happens to the total resistance in a series circuit when more resistors are added?

• The total resistance remains the same.

• The total resistance increases.

• The total resistance fluctuates randomly.

• The total resistance decreases.

In a parallel circuit, how does the voltage across each component compare?

• The voltage across each component is different.

• The voltage is zero across all components.

• The voltage across each component is the same.

• The voltage varies depending on the current through each component.

Calculate the total resistance of three 10Ω resistors in series.

• 20Ω

• 25Ω

• 30Ω

• 15Ω

What is the total current in a parallel circuit with two branches, one with 2A and the other with 3A?

• 5A

• 6A

• 4A

• 2A

If the resistance in a circuit is doubled, what happens to the current if the voltage remains constant?

• The current remains the same.

• The current is tripled.

• The current is doubled.

• The current is halved.

What is the unit of electrical resistance?

• Ampere

• Volt

• Ohm

• Watt