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What is electric current?
The flow of electric charge through a conductor
In a series circuit, what happens to the current across each component?
c) It remains the same
What is the unit of electric current?
Ampere (A)
Which of the following is true about voltage in a parallel circuit?
It remains the same across all components. In parallel circuits, voltage is the same across each branch.
According to Ohm's Law, V=IR. What does this formula describe?
The relationship between current, voltage, and resistance. Ohm’s Law relates voltage, current, and resistance.
What is resistance?
The opposition to the flow of electric charge. Resistance opposes the flow of electric current.
What happens to the total resistance when resistors are connected in series?
It increases. In series, resistances add up, increasing total resistance.
What happens to the total resistance when resistors are connected in parallel?
It decreases. In parallel, total resistance decreases as more paths are available for current to flow.
What is the unit of resistance?
Ohm (Ω)
In a circuit with two 1.5V batteries connected in series, what is the total voltage?
3V. In series, battery voltages add up, so two 1.5V batteries give 3V total.
True or False: In a series circuit, the current is the same through all components.
Answer: True. Current is the same through all components in a series circuit.
True or False: Voltage is the electrical energy used to push charges through a circuit.
Answer: True. Voltage, also called potential difference, is the force that pushes charges.
True or False: Adding resistors in parallel increases the total resistance of a circuit.
Answer: False. Adding resistors in parallel decreases total resistance.
True or False: Cells (batteries) connected in series add their voltages together.
Answer: True. In series, the voltages of cells add together.
True or False: Ohm’s Law applies only to non-ohmic conductors.
Answer: False. Ohm’s Law applies to ohmic conductors, where voltage and current have a linear relationship.
Explain the difference between voltage in a series circuit and a parallel circuit.
In a series circuit, voltage is divided between components. In a parallel circuit, the voltage across each branch is the same as the source voltage.
