Podcast
Questions and Answers
What is the purpose of fixing a standard unit for physical quantities?
What is the purpose of fixing a standard unit for physical quantities?
How is measurement of a physical quantity expressed?
How is measurement of a physical quantity expressed?
Why do we need an internationally acquired standard unit?
Why do we need an internationally acquired standard unit?
What is the function of Vernier calipers, Micrometers, and spherometers?
What is the function of Vernier calipers, Micrometers, and spherometers?
Signup and view all the answers
What is the purpose of the sliding scale on a Vernier caliper?
What is the purpose of the sliding scale on a Vernier caliper?
Signup and view all the answers
What is the term for the resistance to the flow of an electrical current?
What is the term for the resistance to the flow of an electrical current?
Signup and view all the answers
Which term refers to the measure of how much a material opposes the flow of electric current?
Which term refers to the measure of how much a material opposes the flow of electric current?
Signup and view all the answers
What is the term for the process of slowing down or stopping something, such as the flow of an electric current?
What is the term for the process of slowing down or stopping something, such as the flow of an electric current?
Signup and view all the answers
Which term refers to the property of a material to store electrical energy when an electric field is applied?
Which term refers to the property of a material to store electrical energy when an electric field is applied?
Signup and view all the answers
What is the term for the opposition that a circuit offers to the passage of a current when a voltage is applied?
What is the term for the opposition that a circuit offers to the passage of a current when a voltage is applied?
Signup and view all the answers
Study Notes
Standard Units for Physical Quantities
- Standardizing units ensures consistency and eliminates ambiguity in measurements across different locations and contexts.
Expressing Measurements
- Measurements of physical quantities are expressed as a numerical value followed by a unit.
International Standard Units
- Global agreement on standard units facilitates international communication and collaboration in scientific research and engineering projects.
Vernier Calipers, Micrometers, and Spherometers
- Vernier calipers measure lengths with higher precision than rulers, typically in the range of 0.01 cm or 0.1 mm.
- Micrometers achieve even higher precision, measuring to the nearest 0.01 mm (or 0.001 cm).
- Spherometers are used to measure the curvature of spherical surfaces, often employed in optics and lens manufacturing.
Sliding Scale on a Vernier Caliper
- The sliding scale allows for precise readings by providing a more magnified view of the measured length.
Resistance to Electric Current
- The resistance of a material is its opposition to the flow of electric current.
Measure of Resistance
- The term "resistivity" refers to the intrinsic property of a material that quantifies how much it opposes the flow of electric current.
Slowing Down Electric Current
- The term "damping" describes the process of reducing or eliminating the flow of electric current.
Storing Electrical Energy
- The ability of a material to store electrical energy when subjected to an electric field is known as "capacitance".
Opposition to Electric Current in a Circuit
- "Impedance" refers to the overall opposition a circuit offers to the passage of electric current when a voltage is applied. This opposition can arise from resistance, capacitance, or inductance.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about the theory of units and measurements in Medical Biophysics, including the use of ruler, vernier, and micrometer. Understand the importance of standard units and how they enable quantitative comparisons of physical quantities.
