A. There will be no current through resistor . B. There will be maximum current in the connecting wires. C. Potential difference between the capacitor plates A and B is minimum. D. Charge on the capacitor plates is minimum. Choose the correct answer from the options given below:- AA, C Only
- BC, D Only
- CA, B, D Only
- DB, C, D Only
View written solutionFree
Correct answer: D
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Key idea at the instant the key is closed
For an initially uncharged capacitor, at the moment just after closing the key, the capacitor behaves like a short circuit.
That means:
- voltage across capacitor is initially zero,
- current in the circuit is initially maximum.
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Check each statement
Statement A: There will be no current through resistor .
This is false.
At , since the capacitor behaves like a wire, the circuit current is maximum, and hence current does pass through the resistor in the charging circuit.
Statement B: There will be maximum current in the connecting wires.
This is true.
Initially, capacitor offers zero opposition to change in charge, so the charging current is maximum: (for a simple RC circuit).
Statement C: Potential difference between the capacitor plates A and B is minimum.
This is true.
Initially the capacitor is uncharged, so which is the minimum possible value.
Statement D: Charge on the capacitor plates is minimum.
This is true.
Initially, so the charge is minimum.
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Correct set of statements
True statements are:
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Match with options
- A: only → incorrect
- B: only → incorrect
- C: only → incorrect
- D: only → correct
Therefore, the correct option is D.
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