Which of the following substances has infinitely high resistance?

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RRB JE CBT I - (Held On: 31 May 2019 Shift 3)
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  1. Resistors
  2. Conductors
  3. Insulators
  4. Super conductors

Answer (Detailed Solution Below)

Option 3 : Insulators
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Detailed Solution

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The correct answer is Insulators.

In News

  • Insulators are materials that do not allow the flow of electric current.

Key Points

  • Insulators have an extremely high resistance to the flow of electric current.
  • Common examples of insulators include rubber, glass, and plastic.
  • Insulators are used to protect us from the dangerous effects of electricity.
  • Insulating Materials
    • Rubber - Used in electrical cords and cables.
    • Glass - Used in high-voltage applications.
    • Plastic - Commonly used in household wiring.

Additional Information

  • Resistors
    • Resistors are components that resist the flow of electric current.
    • They are used to control the current in a circuit.
    • Resistance is measured in ohms (Ω).
  • Conductors
    • Conductors are materials that allow the flow of electric current.
    • Examples include metals like copper and aluminum.
    • Conductors have low resistance.
  • Superconductors
    • Superconductors are materials that can conduct electricity with zero resistance at very low temperatures.
    • They are used in advanced technological applications like MRI machines and particle accelerators.
    • Superconductivity was discovered by Heike Kamerlingh Onnes in 1911.
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