Current Electricity and Electrical InstrumentHard
Question
When the key K is passed at t =t0, Which of the following statements about the current I in the resister AB of the given circuit is ture?
Options
A.I = 2 mA at all t
B.I oscillates between l mA and 2 mA
C.I = l mA at all t
D.Att = 0,I = 2mA and with time it goes to l mA
Solution
At time i = 0 i.e., when the capacitor is charging, then current through the circuit,
I =
= 2mA
When capacitor is fully charged, no current will pass through it.
Hence current through the circit
I =
= 1mA
I =
= 2mAWhen capacitor is fully charged, no current will pass through it.
Hence current through the circit
I =
= 1mACreate a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
In a Neon discharge tube 2.9 × 1018 Ne+ ions move to the right each second, while 1.2 × 1018 electrons move to...The mass of product liberated on anode in an electrochemical cell depends on (where t is the time period, for which the ...ABCD is a square where each side is a uniform wire of resistance 1Ω. A point E lies on CD such that if a uniform wi...In the ladder network shown, current through the resistor 3 Ω is 0.25 A. The input voltage ′V′ is equal...In the potentiometer arrangement shown, the driving cell D has emf e and internal resistance r. The cell C, whose emf is...