Can electric lines appear as closed loops? Electric field lines start (or diverge) from the +ve (positive) charge and terminate (or converge) on negative charge. If the electric field lines form a closed loop, these lines must originate and terminate on the same charge which is not possible because electric field lines always move from […]
How do you tell if you need to bore a cylinder?
What temperature do kettles boil to?
What temperature do kettles boil to? The boiling point of water changes depending on altitude or the amount of impurities in the water, so a thermostat that stops boiling the water at exactly 100°C presents a problem. At sea level, water boils at 100°C, but for every 150-metre increase in elevation, water’s boiling point lowers […]
What is true inertia?
What is true inertia? Inertia is simply the tendency of an objects to resist a change in whatever state of motion that it currently has. True – Mass is a measure of an object’s inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia. What are the 12 natural […]
What is difference between model and theory?
What is difference between model and theory? Models are a visual and verbal representation of theories or concepts whereas theories are conceptual framework ideas on a phenomenon. Models simplify a theory or concept for better understanding whereas theories explain or predict a phenomenon with their knowledge and understanding regarding the phenomena. Why do we use […]
What is the difference between micro and macro?
What is the difference between micro and macro? Simply put, micro refers to small things and macro refers to big things. Each of these terms appears in a wide variety of contexts and refers to a vast number of concepts, but if you remember this simple rule, you will generally be able to remember which […]
What are the basic electrical elements?
What are the basic electrical elements? The Basics of Electrical Components Resistors. The very first component that you should know about is the resistor. Capacitors. Light Emitting Diode (LED) Transistors. Inductors. Integrated Circuit (IC) What is the purpose of circuit diagram? A drawing meant to depict what the physical arrangement of the wires and the […]
Under what condition can the electric flux linked with a surface be positive?
Under what condition can the electric flux linked with a surface be positive? If a net charge is contained inside a closed surface, the total flux through the surface is proportional to the enclosed charge, positive if it is positive, negative if it is negative. How do you increase flux? There is another way of […]
How many V m is dangerous?
How many V m is dangerous? No known health effects are expected if your exposure to EMF falls below the levels in the following guidelines: natural electromagnetic fields (like those created by the sun): 200 V/m. power mains (not close to power lines): 100 V/m. power mains (close to power lines): 10,000 V/m. What is […]