An electric material must be:
Correct answer: B. Good conductor
- A. Resistor
- B. Good conductor
- C. Insulator
- D. Semiconductor
Explanation
The correct answer is that an electric material must be a good conductor. Good conductors, like copper and aluminum, allow electric current to flow easily due to their low resistance. In contrast, resistors are designed to limit current, insulators block current, and semiconductors have variable conductivity that can be controlled but are not inherently as conductive as metals.
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About Electrostatics
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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