Explain how a galvanometer functions, using electromagnetic principles. Why do magnets attract or repel? What is the difference between magnetic field and magnetic force? Explain why a soft-iron core increases the strength of an electromagnet. ...
Explain how a galvanometer functions, using electromagnetic principles. Explain what is a charge? State and explain Faraday's law. Explain about AC Generator very cleary. Explain how the phenomenon known as electromagnetism relates to an electric motor. ...
Here's my broken earbud and I've popped the back off it. You can see how the wires run up through the main case to the coil inside. We need two wires to make a circuit: one carries the current into the coil from the stereo; the other carries it back again. Next, I've tipped ...
This is how relays work: they use a small electric current to trigger a much bigger one.How relays work Here are two simple animations illustrating how relays use one circuit to switch on a second circuit. When power flows through the first circuit (1), it activates the electromagnet (...
Explain why a soft-iron core increases the strength of an electromagnet. Explain how and why the ferromagnetic domains formed. Draw a typical B-H loop and describe the different magnetization processes that lead to the formation of...
Explain why a soft-iron core increases the strength of an electromagnet. How are transformers made efficient, using the key idea of "eddy's current" and "laminate?" Why are the tires of aircraft made of conductors? Explain why two equipotential lines cannot cross ...
Explain the difference between charging by induction and charging by contact. Include details of how the charging occurs. Charging by Conduction and Induction: Charging by conduction is a method of charging any metallic neutral conductor by making it in ac...
Briefly explain the electromagnetic force. Explain why a soft-iron core increases the strength of an electromagnet. a) How do you explain the shape of the equipotential lines? b) Why are they circular? Explain why the cross sectional area is important when determining the mater...