Units and Measurements: Class 11 Physics Q&A
3 free answers on Units and Measurements (Physics) for Class 11 students, across CBSE, ICSE and State boards. Includes questions such as “what is a potentiometer?”, “What is the si unit of temperature?”, “What are the 7 basic units of physics?”
Question & Answer
Questions
- PhysicsClass 11All
what is a potentiometer?
A potentiometer, often abbreviated as "pot," is a type of electrical component used to control the electrical resistance in a circuit manually. It is also known as a variable resistor or rheostat. Potentiometers are commonly used for tasks such as adjusting the volume on audio equipment, setting the brightness of a screen, or controlling the speed of a motor. Here are the key components and functions of a potentiometer: Physical Structure: A potentiomet
- PhysicsClass 11All
What is the si unit of temperature?
The SI (International System of Units) unit of temperature is the Kelvin, abbreviated as "K." The Kelvin scale is an absolute temperature scale, and it is commonly used in scientific and engineering contexts, especially in physics and chemistry. Unlike the Celsius (°C) and Fahrenheit (°F) scales, which have arbitrary zero points (the freezing point of water for Celsius and a mixture of ice and salt for Fahrenheit), the Kelvin scale starts from absolute zero, which is the lowest possib
- PhysicsClass 11All
What are the 7 basic units of physics?
The seven fundamental SI units are: meter (m) for length, kilogram (kg) for mass, second (s) for time, ampere (A) for electric current, kelvin (K) for temperature, mole (mol) for amount of substance, and candela (cd) for luminous intensity. All other physics units are derived from these base units. For example, velocity (m/s) combines meters and seconds.