Basic Quantities in AC
PHXII07:ALTERNATING CURRENT

356097 The frequency of an alternating voltage is \(50\,cycles{\rm{/}}\sec \) and its amplitude is \(120\;V\). Then the \(r.m.s\) value of voltage is:

1 \(101.37\;V\)
2 \(84.8\;V\)
3 \(70.7\;V\)
4 \(56.5\;V\)
PHXII07:ALTERNATING CURRENT

356098 An alternating current of rms value \(10\;A\) is passed through a \(12 \Omega\) resistor. The maximum potential difference across the resistor is

1 \(20\;V\)
2 \(90\;V\)
3 \(169.68\;V\)
4 None of these
PHXII07:ALTERNATING CURRENT

356099 An \(ac\) generator produces a voltage of \(V = 100\sin \left( {50\pi t} \right)\) volts, where \(t\) is in second. The values of frequency and \(rms\) voltage are.

1 \(75,50\sqrt 2 \)
2 \(50,25\sqrt 2 \)
3 \(100,50\sqrt 2 \)
4 \(25,50\sqrt 2 \)
PHXII07:ALTERNATING CURRENT

356100 Assertion :
Heat generated when same resistance \((R)\) is connected with \(A C\) source of \(V_{r m s}\) will not be same of \(D C\) source (with \(\left.V_{D C}=V_{r m s}\right)\).
Reason :
\(R.M.S.\) voltage is greater than maximum \(A C\) volatge.

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.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII07:ALTERNATING CURRENT

356097 The frequency of an alternating voltage is \(50\,cycles{\rm{/}}\sec \) and its amplitude is \(120\;V\). Then the \(r.m.s\) value of voltage is:

1 \(101.37\;V\)
2 \(84.8\;V\)
3 \(70.7\;V\)
4 \(56.5\;V\)
PHXII07:ALTERNATING CURRENT

356098 An alternating current of rms value \(10\;A\) is passed through a \(12 \Omega\) resistor. The maximum potential difference across the resistor is

1 \(20\;V\)
2 \(90\;V\)
3 \(169.68\;V\)
4 None of these
PHXII07:ALTERNATING CURRENT

356099 An \(ac\) generator produces a voltage of \(V = 100\sin \left( {50\pi t} \right)\) volts, where \(t\) is in second. The values of frequency and \(rms\) voltage are.

1 \(75,50\sqrt 2 \)
2 \(50,25\sqrt 2 \)
3 \(100,50\sqrt 2 \)
4 \(25,50\sqrt 2 \)
PHXII07:ALTERNATING CURRENT

356100 Assertion :
Heat generated when same resistance \((R)\) is connected with \(A C\) source of \(V_{r m s}\) will not be same of \(D C\) source (with \(\left.V_{D C}=V_{r m s}\right)\).
Reason :
\(R.M.S.\) voltage is greater than maximum \(A C\) volatge.

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.
PHXII07:ALTERNATING CURRENT

356097 The frequency of an alternating voltage is \(50\,cycles{\rm{/}}\sec \) and its amplitude is \(120\;V\). Then the \(r.m.s\) value of voltage is:

1 \(101.37\;V\)
2 \(84.8\;V\)
3 \(70.7\;V\)
4 \(56.5\;V\)
PHXII07:ALTERNATING CURRENT

356098 An alternating current of rms value \(10\;A\) is passed through a \(12 \Omega\) resistor. The maximum potential difference across the resistor is

1 \(20\;V\)
2 \(90\;V\)
3 \(169.68\;V\)
4 None of these
PHXII07:ALTERNATING CURRENT

356099 An \(ac\) generator produces a voltage of \(V = 100\sin \left( {50\pi t} \right)\) volts, where \(t\) is in second. The values of frequency and \(rms\) voltage are.

1 \(75,50\sqrt 2 \)
2 \(50,25\sqrt 2 \)
3 \(100,50\sqrt 2 \)
4 \(25,50\sqrt 2 \)
PHXII07:ALTERNATING CURRENT

356100 Assertion :
Heat generated when same resistance \((R)\) is connected with \(A C\) source of \(V_{r m s}\) will not be same of \(D C\) source (with \(\left.V_{D C}=V_{r m s}\right)\).
Reason :
\(R.M.S.\) voltage is greater than maximum \(A C\) volatge.

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.
PHXII07:ALTERNATING CURRENT

356097 The frequency of an alternating voltage is \(50\,cycles{\rm{/}}\sec \) and its amplitude is \(120\;V\). Then the \(r.m.s\) value of voltage is:

1 \(101.37\;V\)
2 \(84.8\;V\)
3 \(70.7\;V\)
4 \(56.5\;V\)
PHXII07:ALTERNATING CURRENT

356098 An alternating current of rms value \(10\;A\) is passed through a \(12 \Omega\) resistor. The maximum potential difference across the resistor is

1 \(20\;V\)
2 \(90\;V\)
3 \(169.68\;V\)
4 None of these
PHXII07:ALTERNATING CURRENT

356099 An \(ac\) generator produces a voltage of \(V = 100\sin \left( {50\pi t} \right)\) volts, where \(t\) is in second. The values of frequency and \(rms\) voltage are.

1 \(75,50\sqrt 2 \)
2 \(50,25\sqrt 2 \)
3 \(100,50\sqrt 2 \)
4 \(25,50\sqrt 2 \)
PHXII07:ALTERNATING CURRENT

356100 Assertion :
Heat generated when same resistance \((R)\) is connected with \(A C\) source of \(V_{r m s}\) will not be same of \(D C\) source (with \(\left.V_{D C}=V_{r m s}\right)\).
Reason :
\(R.M.S.\) voltage is greater than maximum \(A C\) volatge.

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.