Moment of Force (Torque)
We observe motion all around us. Some motions are linear, meaning they occur along a straight line, while others are rotational. Let’s explore the force behind rotational motion and what…
Exercises – Moment of Force
1. A door is 3 feet wide. Calculate the moment of force when a force of 100 N is applied ata. the end of the door b. the middle of…
Ohm’s Law
We know what is current and voltage. Is there any relation between these two? Yes. It is given by a law that is as basic as the alphabet is to…
Current Electricity
We use terms such as current, voltage, as part of our daily routine. What are they? Let us see their meanings and relationship with each other. We have seen what…
Static Electricity
We know that electricity is electrons in motion. Then what is static electricity? How is it electricity when it is static? Let us see now. As we have seen earlier,…
Basics of Electricity
Electricity powers our everyday lives - from bulbs and fans to TVs, radios, and mobile phones. But has it always existed in human history? Not quite. The electrical devices we…