Tiwari Academy’s periodic table app features interactive elements, detailed multilingual element information, atomic structure visuals with 3-D animation which aids in understanding chemistry concepts of each element and it is accessible for students at various levels. It is the nicest ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
Tiwari Academy Discussion Latest Questions
An electric heater is a household appliance that operates based on the heating effect of electric current. When electric current flows through the heating element, it converts electrical energy into heat energy, providing warmth.
An electric lamp of 100 watts used for 10 hours in a day consumes 1 kilowatt hour (kWh) of energy, which is equivalent to 1 unit of energy. This is calculated by converting the total watt-hours into kilowatt-hours.
If a 100-watt electric bulb burns for 10 hours, it consumes 1 kilowatt hour (kWh) of electricity. Since electricity is sold at the rate of Rs 5 per unit, the cost of running the bulb for 10 hours will be ...
Kilowatt hour (kWh) is a unit of electrical energy. It measures the amount of energy consumed or produced over time. One kilowatt hour represents the energy used by a device with a power rating of one kilowatt operating for one ...
The electrolyte used in a car battery is sulfuric acid. Sulfuric acid is crucial for the chemical reactions that occur within the battery, allowing it to store and release electrical energy effectively. It interacts with the lead plates inside the ...
The correct answer is that nichrome wires are used as heating elements due to their high specific resistance and the fact that they do not form oxide when red hot. These properties make nichrome effective at converting electrical energy into ...
Approximately 30-40% of the energy consumed by a tube light is converted into visible light. The rest of the energy is lost as heat due to the inefficiencies in the lighting process.
When the length of a wire is doubled from L to 2L, the resistance of the wire will change due to the relationship between resistance and length in electrical conductors.
If the radius of a wire is halved, its resistance will increase. The resistance of a wire is inversely proportional to the cross-sectional area, which is proportional to the square of the radius. Therefore, halving the radius increases the resistance ...