👉 Basic Concept: When a body of mass m is placed on a weighing machine kept inside a lift, its actual weight is: Actual weight = m × g This force (m × g) acts on the weighing machine, which gives a reaction R. The reading of the machine is this reaction R. 📌 Important:This…
A.C. Generator एक ऐसी मशीन है जो mechanical energy को electrical energy में बदलती है।इसे एक Yugoslav scientist Nikola Tesla ने डिज़ाइन किया था। ⚙️ Principle (सिद्धांत): A.C. Generator electromagnetic induction के सिद्धांत पर काम करता है। जब किसी coil से गुजरने वाला magnetic flux बदलता है, तो coil में electric current (e.m.f.) उत्पन्न होता…
🟢 What is a Transformer? A transformer ek electrical device hota hai jo AC (alternating current) voltage ko increase ya decrease karta hai. 💡 Types: 🧪 Principle – Magic Behind Transformer Transformer mutual induction pe kaam karta hai. Matlab: Jab ek coil ka magnetic flux change hota hai, toh uske paas wali coil mein EMF…
💡 What is RMS Value? RMS (Root Mean Square) value of AC current wo steady current (DC) hota hai jo kisi resistance me utna hi heat produce karta hai jitna alternating current same time me karta hai. Iska matlab: RMS value = Equivalent DC current that produces the same heating effect in a resistor as…
Are you overwhelmed by the sheer volume of formulas you need to remember for your class 11 and 12 physics, chemistry, and biology exams? Don’t worry; you’re not alone. Many students find themselves struggling to retain all the essential formulas required to excel in these subjects. However, with the right approach, creating and mastering a…
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Electric charge is a fundamental concept in physics that plays a crucial role in our everyday lives, from powering our devices to generating lightning in the sky. In this blog, we’ll explore what electric charge is, its properties, and how it impacts the world around us. What is Electric Charge? Electric charge is a property…
Creating excellent handwritten physics notes is essential for understanding and succeeding in your physics studies. Here’s a summary of the key points in simpler language: Get the Right Supplies: Before you start, make sure you have good quality notebooks, pens, pencils, an eraser, a ruler, and a calculator. It’s helpful to use paper with a…
Physics can seem tough, especially if you’re getting ready for big exams like NEET and JEE. But with the right help, mastering physics can be possible. Umesh Rajoria has made handwritten notes for Class 11, 12, NEET, and JEE, and they can be a huge help. In this article, we’ll look at what makes these…
Syllabus: Alternating currents, peak and RMS value of alternating current/voltage; reactance and impedance; LCR series circuit (phasors only), resonance, power in AC circuits, power factor, wattless current. AC generator, Transformer. For interesting Videos of Physics follow our YouTube Channel “PHYSICS WITH UMESH RAJORIA“ Hello Students,Physics is the most crucial subject for all the students of…