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Electricity

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Joined:	30 Oct 2009
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8 Nov 2009 14:01:49 IST

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A resistor and unknown linear device is connected in series .When battery is connected th

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A resistor and unknown linear device is connected in series .When battery is connected the current is zero. the device is

1)capacitor 2)inductor 3)reistor 4)unknown

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M. Fuaad Khan

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Joined: 10 Apr 2009

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9 Nov 2009 00:04:39 IST

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1) CAPACITOR

Cursed Mask

Cool goIITian

Joined: 8 Oct 2007

Posts: 98

9 Nov 2009 00:31:18 IST

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capacitor and it must be fuly charged

L.Selvaganesan

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Joined: 30 Oct 2009

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9 Nov 2009 14:44:02 IST

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please explain your answer

Tanveer Sarma

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Joined: 30 Jul 2008

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9 Nov 2009 15:09:53 IST

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When a DC voltage source is applied to a capacitor there is an initial surge of current, when the voltage across the terminals of the capacitor is equal to the applied voltage, the current flow stops. When the current stops flowing from the power supply to the capacitor, the capacitor is 'charged'. If the DC source is removed from the capacitor, the capacitor will retain a voltage across its terminals (it will remain charged). The capacitor can be discharged by touching the capacitor's external leads together. When using very large capacitors (1/2 farad or more) in your car, the capacitor partially discharges into the amplifier's power supply when the voltage from the alternator or battery starts to fall. Keep in mind that the discharge is only for a fraction of a second. The capacitor can not act like a battery. It only serves to fill in what would otherwise be very small dips in the supply voltage.

manav kapoor

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Joined: 6 May 2009

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9 Nov 2009 15:11:45 IST

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ha s to be a acpicitor

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