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What Resistance Is
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What Resistance Is

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What Resistance Is

The resistance of a component in a circuit is its ability to reduce the current flow. It is measured in ohms.

If someone resists something, which of these options best describes their actions?

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What do we call the flow of electrons through a circuit?

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Do you think resistance will increase or decrease the current around a circuit?

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Which of the following do you think provide resistance in a circuit?

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When we talk about resistance in an electric circuit, we mean the resistance the current feels when passing through a component. It is a measure of how much a component decreases the current as it passes through it. All components provide different amounts of resistance.

Which of the following components do you think have the highest resistance to current?

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Most components want to allow current to flow through them, but they can't avoid introducing a little bit of resistance. Other components, such as resistors, actually want to reduce the current in a circuit, so they have really high resistance.

Which of the following do we measure resistance in?

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If an object has a high resistance, the current that flows through it will ___________.

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Resistance is measured in ohms (Ω)(\Omega). It has a direct effect on the current flowing through the circuit. The higher the resistance, the lower the current that flows through a component.