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 ...
Tiwari Academy Discussion Latest Questions
Electrical fuses are designed to have a low melting point so that they can quickly melt and break the circuit when excessive current flows through, providing protection against electrical hazards such as overheating and fires.
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.
The current flowing through a conductor connected to a 110-volt source can be calculated using Ohm’s law. Ohm’s law states that current (I) equals voltage (V) divided by resistance (R). Here, with a resistance of 440 ohms and a voltage ...
When the temperature of a conductor material is increased, its electrical resistance increases while its electrical conductivity decreases. This is because the increased thermal energy causes more frequent collisions between the charge carriers and the atoms in the material, impeding ...
When an ebonite rod is rubbed with the skin of a cat, the ebonite rod becomes negatively charged. This happens because the rod gains electrons from the cat’s skin, resulting in an excess of electrons on the rod, which gives ...
The fisherman should aim directly below where the fish is visible. This compensates for the refraction of light at the water’s surface, which makes the fish appear higher than its actual position. By aiming below, the spear’s path will align ...
The speed of light is minimum while passing through a medium like glass, where its velocity is slower compared to its speed in vacuum. This difference is due to the higher refractive index of glass, which causes light to slow ...
In biology laboratories, compound microscopes are used to see magnified images of microscopic cells or organisms. These microscopes use multiple lenses to magnify tiny objects, allowing scientists to observe details not visible to the naked eye and study biological structures ...
The additional yellow lights on some transport vehicles are used to improve visibility in foggy or hazy conditions. This is because yellow light has a longer wavelength than white light, allowing it to better penetrate through the water droplets in ...