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Resistance in DC Circuit Formula

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Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. Check FAQs

R = \frac{V}{I}

R - Resistance?V - Voltage?I - Current?

Resistance in DC Circuit Example

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Here is how the Resistance in DC Circuit equation looks like with Values.

Here is how the Resistance in DC Circuit equation looks like with Units.

Here is how the Resistance in DC Circuit equation looks like.

30 = \frac{22.5}{0.75}

30Ω = \frac{22.5V}{0.75A}

30 = \frac{22.5}{0.75}

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Resistance in DC Circuit Solution

Follow our step by step solution on how to calculate Resistance in DC Circuit?

FIRST Step Consider the formula

R = \frac{V}{I}

Next Step Substitute values of Variables

∴

R = \frac{22.5V}{0.75A}

Next Step Prepare to Evaluate

∴

R = \frac{22.5}{0.75}

LAST Step Evaluate

∴

R = 30Ω

Resistance in DC Circuit Formula Elements

Variables

Resistance

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms.

Symbol: R

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Resistance

Voltage

Voltage, electric potential difference is the difference in electric potential between two points, which is defined as the work needed per unit of charge to move a test charge between the two points.

Symbol: V

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Voltage

Current

Current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Symbol: I

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Current

Other formulas in DC Circuits category

Go Voltage in DC Circuit

V = I \cdot R

Go Maximum Power Transfer

P m = \frac{{V th}^{2} \cdot R L}{{(R L + R th)}^{2}}

Go Star to Delta Transformation

Z 1 = Z A + Z B + (\frac{Z A \cdot Z B}{Z C})

Go Delta to Star Transformation

Z A = \frac{Z 1 \cdot Z 3}{Z 1 + Z 2 + Z 3}

How to Evaluate Resistance in DC Circuit?

Resistance in DC Circuit evaluator uses Resistance = Voltage/Current to evaluate the Resistance, The Resistance in DC Circuit formula is defined as the property of a material which opposes the flow of current through it. Resistance is denoted by R symbol.

How to evaluate Resistance in DC Circuit using this online evaluator? To use this online evaluator for Resistance in DC Circuit, enter Voltage (V) & Current (I) and hit the calculate button.

FAQs on Resistance in DC Circuit

What is the formula to find Resistance in DC Circuit?

The formula of Resistance in DC Circuit is expressed as Resistance = Voltage/Current. Here is an example- 30 = 22.5/0.75.

How to calculate Resistance in DC Circuit?

With Voltage (V) & Current (I) we can find Resistance in DC Circuit using the formula - Resistance = Voltage/Current.

Can the Resistance in DC Circuit be negative?

No, the Resistance in DC Circuit, measured in Electric Resistance cannot be negative.

Which unit is used to measure Resistance in DC Circuit?

Resistance in DC Circuit is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Resistance in DC Circuit can be measured.

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