Tech Rumination by Anirudh Vempati

 If you have ever wondered what is inside a non-rechargeable AA battery, this blog post will give you some answers. Non-rechargeable batteries cannot be recharged once they are depleted. They are commonly used in devices that require low to moderate current, such as remote controls, flashlights, toys, and clocks. There are different types of non-rechargeable AA batteries, depending on the chemistry of their electrodes and electrolyte. The most 2 common ones are: Alkaline batteries : These batteries have a zinc anode and a manganese dioxide cathode, with an alkaline electrolyte of potassium hydroxide. They have a nominal voltage of 1.5 V. They are widely available and relatively cheap.   Lithium iron disulfide batteries : These batteries have a lithium anode and an iron disulfide cathode. They have a nominal voltage of 1.5 V. They are more expensive than alkaline batteries, but they offer longer shelf life and better performance in low temperatures. They are often used in ...

Tech Rumination by Anirudh Effects of Electric Current  Did you know that electric current has different effects? In this Blog Post, we are going to explore the three effects of electric current: the heating effect , the magnetic effect , and the chemical effect . Heating effect of electric current : When electric current passes through a conductor, it produces heat, which is known as the heating effect of electric current. Electric bulbs produce light as the current flows through their filaments. Such bulbs are known as incandescent bulbs. Sandwich makers, geysers, and some electric kettles also use this phenomenon. In ancient engineering, a device called a fuse was used for safety, which worked with the heating effect of electric current. A fuse is a glass cylinder with metal edges, and a thin metal wire connects both the metal edges from inside. This wire melts when excess current flows through it due to the heating effect of electri...

Tech Rumination by Anirudh A simple electroscope is a device that can detect the presence of an electric charge. It consists of a metal rod (typically made of copper) with a metal disc or antenna-like structure with copper wire at the top, and two thin metal leaves hanging from the bottom of the rod. The rod should have a hook-like structure at the bottom so that the aluminium leaves can hang without falling easily. The leaves are typically made of aluminium foil and are attached at the bottom of the rod inside a glass jar. When an object with an electric charge is brought close to the top part of the electroscope, the charge transfers to the metal rod and then to the leaves. If the charge is positive, electrons transfer from the leaves to the rod, leaving the leaves positively charged. If the charge is negative, electrons transfer from the rod to the leaves, leaving them negatively charged. Since like charges repel each other, the leave...

 Ever wondered about the mystique behind crafting magnets or desired to forge your own magnetic wonders? Look no further than the fascinating realm of electromagnets. This revolutionary magnet is born when the dance of electrons along a conductor, like a wire, gives rise to a magnetic spectacle. The revelation of this phenomenon dates back to 1820, credited to the ingenious Danish physicist and chemist, Hans Christian Oersted.  A solenoid, a cylindrical coil that channels its inner magnetism when electrified, takes center stage in the enchanting act of creating an electromagnet. Infuse life into this coil by letting an electric current course through it, and behold, the electromagnet comes alive. However, bear in mind, this magnetism is transient, bidding adieu as soon as the current takes its final bow. Creating an electromagnet at home is a breeze, requiring only a handful of elements: an iron nail, insulated copper wire, a battery, and a touch of sandpaper magic. Coil...