RC Circuits
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PHXII03:CURRENT ELECTRICITY

357503 Assertion :
For an electric lamp connected in series with a variable capacitor and \(A C\) source; its brightness increases with increase in capacitance.
Reason :
Capacitive reactance decreases with increase in capacitance of capacitor.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
AIIMS - 2010
PHXII03:CURRENT ELECTRICITY

357504 In order to obtain time constant of \(10\;\,s\) in an \(R-C\) circuit containing a resistance of \(10^{3} \Omega\), the capacity of the condenser should be

1 \(10\mu F\)
2 \(100\mu F\)
3 \(1000\mu F\)
4 \(10000\mu F\)
PHXII03:CURRENT ELECTRICITY

357505 Calculate the steady state charge on the capacitor
supporting img

1 \(0.36\,\mu C\)
2 \(0.15\,\mu C\)
3 \(0.98\,\mu C\)
4 \(0.54\,\mu C\)
PHXII03:CURRENT ELECTRICITY

357506 In the given \(R\) - \(C\) circuit switch \(S\) is closed at \(t = 0\) and the variation of potential drop across the resistor \(({V_R})\) and across capacitor \(({V_C})\) is represented by the given plot then:
supporting img

1 \(2{V_0} = 2{V_1} + {V_2}\)
2 \(2{V_0} = {V_1} + {V_2}\)
3 Curve \(I\) is for \({V_R}\) and \(II\) is for \({V_C}\)
4 None of these
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PHXII03:CURRENT ELECTRICITY

357503 Assertion :
For an electric lamp connected in series with a variable capacitor and \(A C\) source; its brightness increases with increase in capacitance.
Reason :
Capacitive reactance decreases with increase in capacitance of capacitor.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
AIIMS - 2010
PHXII03:CURRENT ELECTRICITY

357504 In order to obtain time constant of \(10\;\,s\) in an \(R-C\) circuit containing a resistance of \(10^{3} \Omega\), the capacity of the condenser should be

1 \(10\mu F\)
2 \(100\mu F\)
3 \(1000\mu F\)
4 \(10000\mu F\)
PHXII03:CURRENT ELECTRICITY

357505 Calculate the steady state charge on the capacitor
supporting img

1 \(0.36\,\mu C\)
2 \(0.15\,\mu C\)
3 \(0.98\,\mu C\)
4 \(0.54\,\mu C\)
PHXII03:CURRENT ELECTRICITY

357506 In the given \(R\) - \(C\) circuit switch \(S\) is closed at \(t = 0\) and the variation of potential drop across the resistor \(({V_R})\) and across capacitor \(({V_C})\) is represented by the given plot then:
supporting img

1 \(2{V_0} = 2{V_1} + {V_2}\)
2 \(2{V_0} = {V_1} + {V_2}\)
3 Curve \(I\) is for \({V_R}\) and \(II\) is for \({V_C}\)
4 None of these
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PHXII03:CURRENT ELECTRICITY

357503 Assertion :
For an electric lamp connected in series with a variable capacitor and \(A C\) source; its brightness increases with increase in capacitance.
Reason :
Capacitive reactance decreases with increase in capacitance of capacitor.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
AIIMS - 2010
PHXII03:CURRENT ELECTRICITY

357504 In order to obtain time constant of \(10\;\,s\) in an \(R-C\) circuit containing a resistance of \(10^{3} \Omega\), the capacity of the condenser should be

1 \(10\mu F\)
2 \(100\mu F\)
3 \(1000\mu F\)
4 \(10000\mu F\)
PHXII03:CURRENT ELECTRICITY

357505 Calculate the steady state charge on the capacitor
supporting img

1 \(0.36\,\mu C\)
2 \(0.15\,\mu C\)
3 \(0.98\,\mu C\)
4 \(0.54\,\mu C\)
PHXII03:CURRENT ELECTRICITY

357506 In the given \(R\) - \(C\) circuit switch \(S\) is closed at \(t = 0\) and the variation of potential drop across the resistor \(({V_R})\) and across capacitor \(({V_C})\) is represented by the given plot then:
supporting img

1 \(2{V_0} = 2{V_1} + {V_2}\)
2 \(2{V_0} = {V_1} + {V_2}\)
3 Curve \(I\) is for \({V_R}\) and \(II\) is for \({V_C}\)
4 None of these
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PHXII03:CURRENT ELECTRICITY

357503 Assertion :
For an electric lamp connected in series with a variable capacitor and \(A C\) source; its brightness increases with increase in capacitance.
Reason :
Capacitive reactance decreases with increase in capacitance of capacitor.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
AIIMS - 2010
PHXII03:CURRENT ELECTRICITY

357504 In order to obtain time constant of \(10\;\,s\) in an \(R-C\) circuit containing a resistance of \(10^{3} \Omega\), the capacity of the condenser should be

1 \(10\mu F\)
2 \(100\mu F\)
3 \(1000\mu F\)
4 \(10000\mu F\)
PHXII03:CURRENT ELECTRICITY

357505 Calculate the steady state charge on the capacitor
supporting img

1 \(0.36\,\mu C\)
2 \(0.15\,\mu C\)
3 \(0.98\,\mu C\)
4 \(0.54\,\mu C\)
PHXII03:CURRENT ELECTRICITY

357506 In the given \(R\) - \(C\) circuit switch \(S\) is closed at \(t = 0\) and the variation of potential drop across the resistor \(({V_R})\) and across capacitor \(({V_C})\) is represented by the given plot then:
supporting img

1 \(2{V_0} = 2{V_1} + {V_2}\)
2 \(2{V_0} = {V_1} + {V_2}\)
3 Curve \(I\) is for \({V_R}\) and \(II\) is for \({V_C}\)
4 None of these
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