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Question
RRB NTPC - 2019
General Knowledge

What is measured in 'joules'?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
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The correct answer is
Energy

Joules: The Unit for Energy

The question asks to identify the physical quantity measured in 'joules'.

  • The joule (symbol: J) is the standard international (SI) unit for measuring energy, work, and heat.
  • One joule is the energy transferred or work done when a force of one newton acts on an object over a distance of one meter in the direction of the force. Mathematically, 1 J = 1 N·m.
  • Other options represent different physical quantities:
    • Power is measured in watts (W).
    • Force is measured in newtons (N).
    • Velocity is measured in meters per second (m/s).

Therefore, energy is the quantity measured in joules.

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