The commercial unit of electric energy is kilowatt hour (kWh).
· It is a measure of the amount of electrical energy consumed over time, and is commonly used by utility companies to bill customers for their electricity usage.
· One kilowatt hour is equivalent to using one kilowatt of power for one hour. For example, if a 100-watt light bulb is used for 10 hours, it would consume 1 kilowatt hour of energy (100 watts x 10 hours = 1,000 watt-hours = 1 kWh).
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60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins English_____ arise from the errors due to imperfect design or calibration of the measuring instrument, zero error in the instrument, etc.
The smallest value that can be measured by the measuring instrument is called
‘P’ of a body is defined as product of mass and velocity. What is P here?
In relation A = , the quantity A, B and C are expressed in units of N kg⁻¹ s³, ms² and m² s⁻¹, respectively.If p and q are constants, find the values of p and q.
When light enters from air into a medium, its speed changes. Which of the following properties of light remains constant during this transition?
How many mutually independent base quantities are there in the current International System of Units (SI)?
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