srijanpatra
Active member
 |  Subject: Does an electric bell work in alternating current? Tue Aug 11, 2009 6:55 pm | |
| | Does an electric bell work in alternating current? |
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DIVA
| | Subject: Re: Does an electric bell work in alternating current? Tue Aug 11, 2009 9:53 pm | |
| | NO.Because magnetic field'll keep changing & the net magnetism'll be 0.The electromagnet'll not get magnetised &d hammer won't hit d gong. |
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QUEST
Active member
| | Subject: Re: Does an electric bell work in alternating current? Fri Aug 14, 2009 12:46 pm | |
| it can work, but icse board doesnot accepts that answer.
actually ac can be used to change frerquency of ringing the bell--but do not write thi answer fr ur board exam--thtz wht my teacher said. |
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