Two charges 1C and -4C exist in air. What is the direction of force?
Correct answer: C. From 1C to -4C
- A. Away from 1C
- B. Away from -4C
- C. From 1C to -4C
- D. From -4C to 1C
Explanation
In electrostatics, unlike charges attract each other. Here, we have a positive charge (1C) and a negative charge (-4C), which means the force between them will be attractive. The force will act from the positive charge towards the negative charge, hence the correct direction is from 1C to -4C. The other options are incorrect as they either suggest a repulsive force or incorrect direction of attraction.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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