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Kushal : Posted in
Topic :- Physics - Sub Topic :- Electricity and Magnetism
Magnetic Field
 
The north-pole end of a bar magnet is held near a positively charged piece of plastic. Is the plastic attracted, repelled, or unaffected by the magnet?
 
12/1/2012
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Pardeep : Posted in
Topic :- Physics - Sub Topic :- Electricity and Magnetism
A capacitor is charged and then made to discharge through a resistance
A capacitor is charged and then made to discharge through a resistance. The time constant is T. In what time will the potential difference across the capacitor decrease by 10%
6/29/2011
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Khushdil: Replied
its RC*ln(10/9)
10/11/2011
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Pardeep : Posted in
Topic :- Physics - Sub Topic :- Electricity and Magnetism
A capacitor is charged
A capacitor is charged and then made to discharge through a resistance. The time constant is? How many time constants will the potential difference across the capacitor fall to 10% of its initial value?
6/29/2011
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Pardeep : Posted in
Topic :- Physics - Sub Topic :- Electricity and Magnetism
Capacitor on charge 10 percent less than final charge
A capacitor charges from a cell through a resistance. The time constant is t. After how many time constants will the charge on the capacitor be 10% less than its final charge?
6/29/2011
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