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According to Ohm's law, if the resistance of a circuit remains constant and the potential difference across it is doubled, the current flowing through it will:
remain halved
remain unchanged
be doubled
be quadrupled
be doubled
According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference across its ends, provided the temperature and other physical conditions remain constant. Since IтИЭV, doubling the potential difference (V) results in the current (I) being doubled.
According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference across its ends, provided the temperature and other physical conditions remain constant. Since IтИЭV, doubling the potential difference (V) results in the current (I) being doubled.
Think of water flowing through a pipe; if you increase the water pressure (voltage) while the pipe's resistance (width/clogging) stays the same, the flow rate (current) of the water will increase proportionally.
VIR (V = I ├ЧR): Very Important Relationship.
V=IR тАФ Ohm's Law formula representing voltage, current, and resistance
I=RVтАЛ тАФ Formula to calculate current when voltage and resistance are known
Ohm's Law states that V=IR. When the resistance (R) is held constant, the current becomes a direct function of voltage. If V becomes 2V, the new current IтА▓ is calculated as IтА▓=R2VтАЛ=2├Ч(RVтАЛ)=2I.
Ohm's law is applicable only to ohmic conductors (like metallic resistors).
Current is directly proportional to voltage at a constant temperature.
Resistance is the ratio of potential difference to current, which remains constant for a fixed physical setup.
Predicts circuit behavior under varying supply voltages
Essential for designing basic electrical circuits
Does not apply to non-ohmic devices like semiconductors (diodes or transistors) where the V-I curve is non-linear
Determining the required resistance for LED protection
Calculating power consumption in electrical appliances
The SI unit of resistance is the Ohm (╬й).
Option A is incorrect because current increases, not decreases.
Option B is incorrect because current is dependent on voltage.
Option D is incorrect because the relationship is linear, not quadratic.
C is correct тАФ Since current is directly proportional to potential difference when resistance is constant, doubling the voltage doubles the current.
Always verify if the temperature is constant before applying Ohm's Law, as resistance changes with temperature in real-world components.
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