Why is soft iron used as the core of the electromagnet in an electric bell? Why do we prefer steel or alnico for making permanent magnets? Give the reason(s) for superconductivity at low and at high temperatures. Why mercury is used as a thermometric liquid?
Why is soft iron used as the core of the electromagnet in an electric bell? The Earth's geographic North Pole is near a magnetic south pole. Explain why. Briefly and clearly explain why charged objects attract neutral objects. Why are alpha and beta rays deflected in op...
However, the magnets still remained. For all the reasons cited above, they need to go too. And this is where we get the opportunity to comprehend the brilliance of the AC induction motor used in a Tesla. Note: the induction motor was also used in the EV-1. Modern ...
Why must soft iron be used with an electromagnet? Explain the properties of cotton fiber considered by cotton spinners. What affects the resistivity of a wire? Why are electricity and magnetism related? Why do polar bears have thick coat of fur?
Why must soft iron be used with an electromagnet? Why are convection currents important? Why does a magnet lose its magnetism when dropped? Why are superconductors important? Why is collimation important in radiology? Why is the gravitational force important?
Why is soft iron used as the core of the electromagnet in an electric bell? Why are Eddy currents circular(round) in shape? Answer true or false: If you took a compass to the earth's magnetic north pole, the 'N' end of the compass would point up (not down). What about north...
Why must soft iron be used with an electromagnet? How is iron ore formed? In what way does renewable energy differ from nonrenewable energy? Why do synthetic elements decay quickly? Why is aluminum carbide Al4C3 and not AlC3? Why are silicate minerals important? Why are igneous rocks usef...
Why are laminated cores used in AC relays? Why is soft iron used as the core of the electromagnet in an electric bell? Why can't all materials become superconductors? Why is A.C. voltage preferred over D.C? Give the reason why a dielectric material increases capacitance compared with ...
Why is soft iron used as the core of the electromagnet in an electric bell? The stack of magnets works as one big bar magnet. Do the poles change when you divide the magnet into pieces? Explain how a single magnet can repel the rest of the stack, but still stick ...
Explain why a soft-iron core increases the strength of an electromagnet. When air is quickly compressed, why does its temperature increase? Explain why heat pumps do not work as well in very cold climates as they do in milder ones. Is the same true of refrigerators? Why is half-...