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Advantages and Disadvantages of A.C and D.C

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  What comes to your mind first when you hear about AC and DC currents ?  No! Don’t open your textbooks, yet!  For many students learning secondary physics, AC and DC generally means -  Alternating Current Direct Current  However, we all know that this knowledge is not enough to write in exams or solve problems related to the same.  You need to understand how alternating current (AC) and direct current (DC) work.  Let us give you an example.  When you plug your phone into the charger and switch on the current, what current do you think runs through the circuit?  Well, it's the AC that's emitted from the plug and enters the charger. But it’s the charger that changes that transforms that current into DC. This is because alternating current keeps changing directions. And you can’t afford to use that current inside your phone.  There is a small circuit inside every charger that converts AC from the wall into DC before sending it into your ph...
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Atomic Structure – Exploring the Internal Composition of the Atom

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  For many Singapore students, Atomic Structure is the first chapter in chemistry that feels seriously abstract . You can’t see an atom, you can’t touch it, yet you’re expected to understand what’s happening inside it and then apply that understanding to equations, periodic trends, and exam questions. It’s no surprise that this chapter often creates confusion right from the start. Let’s slow things down and explore Atomic Structure from the inside , step by step, in a way that actually makes sense. What Is an Atom, Really? An atom is the smallest unit of matter that still retains the properties of an element. Everything around us, air, water, metals, even our bodies are made up of atoms. Instead of thinking of an atom as a complicated diagram from a textbook, imagine it as a tiny system with order and balance. At the centre of the atom is the nucleus , which contains: Protons (positively charged) Neutrons (no charge) Moving around the nucleus are electrons , which carry a nega...
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8 Proven Study Tips To Ace Your Physics And Chemistry Exams in Singapore

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  Preparing for physics and chemistry exams can definitely feel intimidating, but I’ve seen how the right study habits can completely change that experience. As someone who works closely with students, I know how much personalised support and a comfortable learning environment matter. Many learners also find that attending physics tuition gives them a clearer structure and helps reinforce concepts that are otherwise difficult to grasp in class. In this article, I’m sharing practical study tips that truly help, and I’ll also walk you through effective strategies to feel more confident and ready for your exams. Understand The Basics  One of the most important steps in preparing for your exams is ensuring that you have a strong understanding of the core concepts in physics and chemistry. These subjects are built on foundational principles, and having a solid grasp of these will help you solve more complex problems. Start by reviewing your class notes and textbooks to identify ke...
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