357094
An electric current is given by the expression \(I\left( t \right) = 100\sin \left( {120\pi t} \right)A\). The total charge carried by the current from \(t = 0\,\sec \) to \(t{\rm{ }} = \frac{1}{{240}}{\rm{sec}}\) is
357095
An electron revolves in a circle at the rate of \(10^{19}\) rounds per second. The equivalent current is \(\left( {e = 1.6 \times {{10}^{ - 19}}C} \right.\) )
1 \(1.0\;A\)
2 \(1.6\;A\)
3 \(2.0\;A\)
4 \(2.6\;A\)
Explanation:
Here, frequency of electron \(=10^{19}\) round per sec. \( = {10^{19}}\;Hz\) \(\therefore \quad T=\dfrac{1}{v}=10^{-19} \mathrm{sec}\) Electric charge on electron \(e = 1.6 \times {10^{ - 19}}C\) \(\therefore \quad\) Equivalent current \( = \frac{e}{T} = \frac{{1.6 \times {{10}^{ - 19}}}}{{{{10}^{ - 19}}}} = 1.6\;A\)
PHXII03:CURRENT ELECTRICITY
357096
Assertion : The current in a wire is due to flow of free electrons in a definite direction. Reason : A current carrying wire should be charged.
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.
Explanation:
While electric current results from the flow of electrons in a wire, the wire is electrically neutral overall, as the number of protons equals electrons at any moment (meaning a net charge of zero). So correct option is (3).
PHXII03:CURRENT ELECTRICITY
357097
The flow of the electric current through a metallic conductor is
1 Only due to electrons
2 Only due to \(+ve\) charges
3 Due to both nuclei and electrons
4 Cannot be predicted
Explanation:
The flow of electric current through a metallic conductor is primarily due to the motion of electrons . Electrons are the charge carries responsible for carrying the electric current in metals. While there are positively charged nuclei in the metal, they are relatively stationary compared to the highly mobile and lighter electrons and have a negligible contribution to the electric current. So option (1) is correct.
357094
An electric current is given by the expression \(I\left( t \right) = 100\sin \left( {120\pi t} \right)A\). The total charge carried by the current from \(t = 0\,\sec \) to \(t{\rm{ }} = \frac{1}{{240}}{\rm{sec}}\) is
357095
An electron revolves in a circle at the rate of \(10^{19}\) rounds per second. The equivalent current is \(\left( {e = 1.6 \times {{10}^{ - 19}}C} \right.\) )
1 \(1.0\;A\)
2 \(1.6\;A\)
3 \(2.0\;A\)
4 \(2.6\;A\)
Explanation:
Here, frequency of electron \(=10^{19}\) round per sec. \( = {10^{19}}\;Hz\) \(\therefore \quad T=\dfrac{1}{v}=10^{-19} \mathrm{sec}\) Electric charge on electron \(e = 1.6 \times {10^{ - 19}}C\) \(\therefore \quad\) Equivalent current \( = \frac{e}{T} = \frac{{1.6 \times {{10}^{ - 19}}}}{{{{10}^{ - 19}}}} = 1.6\;A\)
PHXII03:CURRENT ELECTRICITY
357096
Assertion : The current in a wire is due to flow of free electrons in a definite direction. Reason : A current carrying wire should be charged.
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.
Explanation:
While electric current results from the flow of electrons in a wire, the wire is electrically neutral overall, as the number of protons equals electrons at any moment (meaning a net charge of zero). So correct option is (3).
PHXII03:CURRENT ELECTRICITY
357097
The flow of the electric current through a metallic conductor is
1 Only due to electrons
2 Only due to \(+ve\) charges
3 Due to both nuclei and electrons
4 Cannot be predicted
Explanation:
The flow of electric current through a metallic conductor is primarily due to the motion of electrons . Electrons are the charge carries responsible for carrying the electric current in metals. While there are positively charged nuclei in the metal, they are relatively stationary compared to the highly mobile and lighter electrons and have a negligible contribution to the electric current. So option (1) is correct.
357094
An electric current is given by the expression \(I\left( t \right) = 100\sin \left( {120\pi t} \right)A\). The total charge carried by the current from \(t = 0\,\sec \) to \(t{\rm{ }} = \frac{1}{{240}}{\rm{sec}}\) is
357095
An electron revolves in a circle at the rate of \(10^{19}\) rounds per second. The equivalent current is \(\left( {e = 1.6 \times {{10}^{ - 19}}C} \right.\) )
1 \(1.0\;A\)
2 \(1.6\;A\)
3 \(2.0\;A\)
4 \(2.6\;A\)
Explanation:
Here, frequency of electron \(=10^{19}\) round per sec. \( = {10^{19}}\;Hz\) \(\therefore \quad T=\dfrac{1}{v}=10^{-19} \mathrm{sec}\) Electric charge on electron \(e = 1.6 \times {10^{ - 19}}C\) \(\therefore \quad\) Equivalent current \( = \frac{e}{T} = \frac{{1.6 \times {{10}^{ - 19}}}}{{{{10}^{ - 19}}}} = 1.6\;A\)
PHXII03:CURRENT ELECTRICITY
357096
Assertion : The current in a wire is due to flow of free electrons in a definite direction. Reason : A current carrying wire should be charged.
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.
Explanation:
While electric current results from the flow of electrons in a wire, the wire is electrically neutral overall, as the number of protons equals electrons at any moment (meaning a net charge of zero). So correct option is (3).
PHXII03:CURRENT ELECTRICITY
357097
The flow of the electric current through a metallic conductor is
1 Only due to electrons
2 Only due to \(+ve\) charges
3 Due to both nuclei and electrons
4 Cannot be predicted
Explanation:
The flow of electric current through a metallic conductor is primarily due to the motion of electrons . Electrons are the charge carries responsible for carrying the electric current in metals. While there are positively charged nuclei in the metal, they are relatively stationary compared to the highly mobile and lighter electrons and have a negligible contribution to the electric current. So option (1) is correct.
357094
An electric current is given by the expression \(I\left( t \right) = 100\sin \left( {120\pi t} \right)A\). The total charge carried by the current from \(t = 0\,\sec \) to \(t{\rm{ }} = \frac{1}{{240}}{\rm{sec}}\) is
357095
An electron revolves in a circle at the rate of \(10^{19}\) rounds per second. The equivalent current is \(\left( {e = 1.6 \times {{10}^{ - 19}}C} \right.\) )
1 \(1.0\;A\)
2 \(1.6\;A\)
3 \(2.0\;A\)
4 \(2.6\;A\)
Explanation:
Here, frequency of electron \(=10^{19}\) round per sec. \( = {10^{19}}\;Hz\) \(\therefore \quad T=\dfrac{1}{v}=10^{-19} \mathrm{sec}\) Electric charge on electron \(e = 1.6 \times {10^{ - 19}}C\) \(\therefore \quad\) Equivalent current \( = \frac{e}{T} = \frac{{1.6 \times {{10}^{ - 19}}}}{{{{10}^{ - 19}}}} = 1.6\;A\)
PHXII03:CURRENT ELECTRICITY
357096
Assertion : The current in a wire is due to flow of free electrons in a definite direction. Reason : A current carrying wire should be charged.
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.
Explanation:
While electric current results from the flow of electrons in a wire, the wire is electrically neutral overall, as the number of protons equals electrons at any moment (meaning a net charge of zero). So correct option is (3).
PHXII03:CURRENT ELECTRICITY
357097
The flow of the electric current through a metallic conductor is
1 Only due to electrons
2 Only due to \(+ve\) charges
3 Due to both nuclei and electrons
4 Cannot be predicted
Explanation:
The flow of electric current through a metallic conductor is primarily due to the motion of electrons . Electrons are the charge carries responsible for carrying the electric current in metals. While there are positively charged nuclei in the metal, they are relatively stationary compared to the highly mobile and lighter electrons and have a negligible contribution to the electric current. So option (1) is correct.
357094
An electric current is given by the expression \(I\left( t \right) = 100\sin \left( {120\pi t} \right)A\). The total charge carried by the current from \(t = 0\,\sec \) to \(t{\rm{ }} = \frac{1}{{240}}{\rm{sec}}\) is
357095
An electron revolves in a circle at the rate of \(10^{19}\) rounds per second. The equivalent current is \(\left( {e = 1.6 \times {{10}^{ - 19}}C} \right.\) )
1 \(1.0\;A\)
2 \(1.6\;A\)
3 \(2.0\;A\)
4 \(2.6\;A\)
Explanation:
Here, frequency of electron \(=10^{19}\) round per sec. \( = {10^{19}}\;Hz\) \(\therefore \quad T=\dfrac{1}{v}=10^{-19} \mathrm{sec}\) Electric charge on electron \(e = 1.6 \times {10^{ - 19}}C\) \(\therefore \quad\) Equivalent current \( = \frac{e}{T} = \frac{{1.6 \times {{10}^{ - 19}}}}{{{{10}^{ - 19}}}} = 1.6\;A\)
PHXII03:CURRENT ELECTRICITY
357096
Assertion : The current in a wire is due to flow of free electrons in a definite direction. Reason : A current carrying wire should be charged.
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.
Explanation:
While electric current results from the flow of electrons in a wire, the wire is electrically neutral overall, as the number of protons equals electrons at any moment (meaning a net charge of zero). So correct option is (3).
PHXII03:CURRENT ELECTRICITY
357097
The flow of the electric current through a metallic conductor is
1 Only due to electrons
2 Only due to \(+ve\) charges
3 Due to both nuclei and electrons
4 Cannot be predicted
Explanation:
The flow of electric current through a metallic conductor is primarily due to the motion of electrons . Electrons are the charge carries responsible for carrying the electric current in metals. While there are positively charged nuclei in the metal, they are relatively stationary compared to the highly mobile and lighter electrons and have a negligible contribution to the electric current. So option (1) is correct.