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What is the resistance of a wire if the potential difference is 12V and current is 2A?
6 Ohm
24 Ohm
10 Ohm
14 Ohm
6 Ohm
The resistance of the wire is 6 Ohm, which is determined using Ohm's Law by dividing the potential difference (12┬аV) by the current (2┬аA).
The resistance of the wire is 6 Ohm, which is determined using Ohm's Law by dividing the potential difference (12┬аV) by the current (2┬аA).
Think of voltage as water pressure, current as the flow rate of water, and resistance as the narrowing of a pipe that restricts that flow.
R=IVтАЛ тАФ Formula for electrical resistance
V=I├ЧR тАФ Formula for potential difference
According to Ohm's Law, the resistance (R) of a conductor is the ratio of the potential difference (V) applied across it to the current (I) flowing through it, expressed mathematically as R=IVтАЛ. This relationship measures how strongly a device or material opposes the flow of electric current.
Electrical resistance is measured in Ohms (╬й).
Potential difference is measured in Volts (V).
Current is measured in Amperes (A).
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The SI unit of electrical resistance is named after the German physicist Georg Simon Ohm.
Option B (24 Ohm) is the product of voltage and current (12├Ч2), which yields electrical power in watts rather than resistance.
A is correct тАФ The resistance of the wire is calculated as 12/2=6┬а╬й using Ohm's Law.
Always verify that your quantities are in standard SI units (Volts, Amperes, Ohms) before applying Ohm's Law to avoid calculation errors.
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