Circuits & Ohm's Law

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What is Ohm's Law?

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Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It can be expressed as V = I × R.

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What is Voltage?

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Voltage, measured in volts (V), is the electrical potential difference between two points in a circuit. It is the force that pushes electric charges through a conductor.

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What is Current?

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Current, measured in amperes (A), is the flow of electric charge in a circuit. It represents how many charges pass through a point in the circuit per second.

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What is Resistance?

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Resistance, measured in ohms (Ω), is a measure of the opposition to the flow of current in a circuit. It determines how much current will flow for a given voltage.

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How do you calculate Voltage using Ohm's Law?

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Voltage (V) can be calculated using the formula V = I × R, where I is the current in amperes and R is the resistance in ohms.

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How do you calculate Current using Ohm's Law?

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Current (I) can be calculated using the formula I = V / R, where V is the voltage in volts and R is the resistance in ohms.

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How do you calculate Resistance using Ohm's Law?

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Resistance (R) can be calculated using the formula R = V / I, where V is the voltage in volts and I is the current in amperes.

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What is a Closed Circuit?

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A closed circuit is a complete electrical circuit through which current can flow without interruption.

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What is an Open Circuit?

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An open circuit is a broken circuit where the current cannot flow due to a gap or break in the path.

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What is a Parallel Circuit?

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A parallel circuit is a type of electrical circuit where multiple paths are available for current to flow. If one path is interrupted, current can still flow through other paths.