NEET
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- NEET
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- Physics
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- Capacitance
NEET · Physics · Capacitance
Given below are two statements: one is labelled as Assertion (A)...
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In a DC circuit containing a capacitor and a resistor in series, the potential difference across the resistor becomes zero at steady state.
Reason (R): A capacitor stores energy in the form of an electrostatic field between its plates.
In the light of the above statements, choose the most appropriate answer from the options given below:
Assertion (A): In a DC circuit containing a capacitor and a resistor in series, the potential difference across the resistor becomes zero at steady state.
Reason (R): A capacitor stores energy in the form of an electrostatic field between its plates.
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
- BBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
- CAssertion (A) is true but Reason (R) is false.
- DAssertion (A) is false but Reason (R) is true.
Correct answer
B. Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
Step-by-step solution
Assertion (A) is true: In a DC circuit at steady state, the capacitor is fully charged and acts as an open circuit, blocking the flow of direct current (). According to Ohm's law, the potential difference across the series resistor is .
Reason (R) is true: A capacitor stores electrical energy in the electrostatic field established between its plates.
However, Reason (R) is not the correct explanation for Assertion (A). The correct explanation is that the capacitor offers infinite resistance to steady DC, causing the circuit current to be zero.
Answer: Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
Reason (R) is true: A capacitor stores electrical energy in the electrostatic field established between its plates.
However, Reason (R) is not the correct explanation for Assertion (A). The correct explanation is that the capacitor offers infinite resistance to steady DC, causing the circuit current to be zero.
Answer: Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).