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Which law states that the force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them?
Coulomb's Law
Ohm's Law
Faraday's Law
Ampere's Law
Coulomb's Law
Coulomb's Law is a fundamental law of electrostatics that quantifies the electrostatic force of attraction or repulsion between two stationary point charges. It states that the magnitude of the force is directly proportional to the product of the charges and inversely proportional to the square of the distance separating them.
Coulomb's Law is a fundamental law of electrostatics that quantifies the electrostatic force of attraction or repulsion between two stationary point charges. It states that the magnitude of the force is directly proportional to the product of the charges and inversely proportional to the square of the distance separating them.
Think of static electricity making clothes stick together or a balloon clinging to a wall after being rubbed against hair; stronger charges or closer distances make that cling much stronger.
Remember 'Q тЛЕQover R squared' for Coulomb's force equation.
F=r2kq1тАЛq2тАЛтАЛ тАФ Electrostatic force between two point charges
The electrostatic force acts along the straight line joining the two charges. Like charges repel each other, while opposite charges attract, governed by the mathematical relation involving the charges and the distance between them.
Applies strictly to stationary point charges.
Follows the inverse-square law.
The constant k depends on the medium between the charges.
Calculating atomic and molecular forces
Designing electrostatic precipitators and printers
The Coulomb constant in a vacuum is k=4╧А╬╡0тАЛ1тАЛтЙИ9├Ч109N┬аm2CтИТ2.
Option B (Ohm's Law) relates to current, voltage, and resistance (V=IR).
A is correct тАФ Coulomb's Law defines the force between two point charges.
Note that Coulomb's Law has the exact same inverse-square mathematical structure as Newton's Law of Universal Gravitation, replacing masses with electrical charges.
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