Circuits

Which word means how hard it is for electrons to flow?

• Current

• Voltage

• Resistance

• Power

Answer explanation

Resistance means how hard it is for electrons to flow, making it the correct choice in this context.

This is an example of a _______ circuit

• open

• series

• parallel

• square

Answer explanation

This is an example of a series circuit because the components are connected in a single path, allowing the flow of current through each one in sequence.

If the Voltage is increased and the resistance stays the same, Current will

• Increase

• Decrease

• Stay the same

• Not enough info

Answer explanation

If the Voltage is increased and the resistance stays the same, according to Ohm's Law (V=IR), an increase in Voltage will lead to an increase in Current.

If the Voltage stays the same and Resistance is increased, Current will 

• Increase

• Decrease

• Stay the same

• Not enough info

Answer explanation

If the Voltage stays the same and Resistance is increased, according to Ohm's Law (V = IR), if R increases, I must decrease. Therefore, the Current will decrease.

If the Voltage stays the same and Resistance is increased, Current will 

• Increase

• Decrease

• Stay the same

• Not enough info

Answer explanation

If the Voltage stays the same and Resistance is increased, according to Ohm's Law (V=IR), if R increases, I must decrease. Therefore, the Current will decrease.

In a series circuit, which of the following is the same throughout the circuit?

• Resistance

• Voltage

• Current

• Power

Answer explanation

In a series circuit, the current is the same throughout the circuit. This is due to the fact that there is only one path for the current to flow, so it remains constant.

What is current measured in?

• Ω (Ohms)

• V (Volts)

• A (Amps)

• W (Watts)

Answer explanation

Current is measured in Amperes (A), which is the correct choice for this question.

In a series circuit, which of the following will vary based on the resistor?

• Power

• Voltage

• Current

• None of the above

Answer explanation

In a series circuit, voltage will vary based on the resistor as it follows Ohm's Law (V=IR), where voltage is directly proportional to current and resistance.

What is resistance measured in?

• Ω (Ohms)

• V (Volts)

• A (Amps)

• W (Watts)

Answer explanation

Resistance is measured in Ohms (Ω), which is the correct answer choice.

What is voltage?

• The flow of protons

• The number of charged particles that pass each second

• The difference in potential energy of charged particles

• The rate at which energy is being transformed

Answer explanation

Voltage is the difference in potential energy of charged particles, representing the energy per unit charge available to move the charge between two points.