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Questions and Answers
What is the SI unit of force?
What is the SI unit of force?
- Joule
- Pascal
- Newton (correct)
- Watt
What is the relationship between voltage, current, and resistance in an electrical circuit?
What is the relationship between voltage, current, and resistance in an electrical circuit?
- Current = Voltage x Resistance
- Resistance = Voltage / Current
- Voltage = Current / Resistance (correct)
- Voltage = Current x Resistance
Which of the following is an example of a non-contact force?
Which of the following is an example of a non-contact force?
- Tension
- Magnetic force (correct)
- Gravity
- Friction
What is the SI unit of acceleration?
What is the SI unit of acceleration?
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Which of the following is an example of scalar quantity?
Which of the following is an example of scalar quantity?
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What does the area under a velocity-time graph represent?
What does the area under a velocity-time graph represent?
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Study Notes
Units and Quantities
- The SI unit of force is Newton (N)
- The SI unit of acceleration is meter per second squared (m/s²)
Electrical Circuits
- The relationship between voltage, current, and resistance in an electrical circuit is expressed by Ohm's Law: V = I × R
Forces
- A non-contact force is a force that acts over a distance, without physical contact, such as gravity or magnetism
Scalar and Vector Quantities
- A scalar quantity is a quantity that has only magnitude, but no direction, such as mass or temperature
Motion
- The area under a velocity-time graph represents the displacement of an object
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