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Questions and Answers
What is the SI unit of force?
What is the SI unit of energy?
Which of the following is a vector quantity?
Which law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force?
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What is the SI unit of electric current?
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Which of the following is a scalar quantity?
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What is the SI unit of power?
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What is the SI unit of work done?
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Which of the following is a scalar quantity?
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What is the SI unit of electric charge?
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Study Notes
Units in Physics
- The SI unit of force is the Newton (N).
- The SI unit of energy is the Joule (J).
Vector and Scalar Quantities
- Force is a vector quantity.
- Mass is a scalar quantity.
- Energy is a scalar quantity.
- Work done is a scalar quantity.
Laws of Motion
- Newton's First Law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Electricity
- The SI unit of electric current is the Ampere (A).
- The SI unit of power is the Watt (W).
- The SI unit of electric charge is the Coulomb (C).
- The SI unit of work done is the Joule (J).
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Description
Test your knowledge of physics concepts from Class 9 NCERT with questions about SI units, vector quantity, and laws of motion.
