139431
If \(\mathbf{E}\) and \(\mathbf{H}\) represent the intensity of electric field and magnetising field respectively, then the unit of \(E\) / \(H\) will be
1 ohm
2 mho
3 joule
4 newton
Explanation:
A The impedance in free space \(\left(\mathrm{z}_{0}\right)=\frac{\mathrm{E}}{\mathrm{H}}\) Thus, unit of \(\frac{\mathrm{E}}{\mathrm{H}}\) is ohm.
JEE Main-27.08.2021
Units and Measurements
139432
\(\quad\) The unit of current element is
1 A m
2 \(\mathrm{Am}^{-1}\)
3 \(\mathrm{Am}^{2}\)
4 \(\mathrm{Am}^{-2}\)
Explanation:
A The unit of current element is ampere- meter (Am).
AP EAMCET-06.09.2021
Units and Measurements
139436
Which of the following is not a unit of time?
1 Lunar month
2 Light year
3 Leap year
4 Microsecond
Explanation:
B Lunar month, leap year and microsecond are the units of time but light year is the unit of distance and it is used to measure astronomical distance.
AP EAMCET (23.09.2020) Shift-I
Units and Measurements
139442
If \(P, Q\) and \(R\) are physical quantities having different dimensions, which of the following combination can never be a meaningful quantity?
1 \(\frac{P-Q}{R}\)
2 \(P Q-R\)
3 \(\frac{P Q}{R}\)
4 \(\frac{P R-Q^{2}}{R}\)
Explanation:
A P , Q and R are physical quantities having different dimensions. By the principle of homogeneity, the physical quantities having different dimensions, can not be added or subtracted directly. Hence, \(\frac{\mathrm{P}-\mathrm{Q}}{\mathrm{R}}\) is not a meaningful quantity.
139431
If \(\mathbf{E}\) and \(\mathbf{H}\) represent the intensity of electric field and magnetising field respectively, then the unit of \(E\) / \(H\) will be
1 ohm
2 mho
3 joule
4 newton
Explanation:
A The impedance in free space \(\left(\mathrm{z}_{0}\right)=\frac{\mathrm{E}}{\mathrm{H}}\) Thus, unit of \(\frac{\mathrm{E}}{\mathrm{H}}\) is ohm.
JEE Main-27.08.2021
Units and Measurements
139432
\(\quad\) The unit of current element is
1 A m
2 \(\mathrm{Am}^{-1}\)
3 \(\mathrm{Am}^{2}\)
4 \(\mathrm{Am}^{-2}\)
Explanation:
A The unit of current element is ampere- meter (Am).
AP EAMCET-06.09.2021
Units and Measurements
139436
Which of the following is not a unit of time?
1 Lunar month
2 Light year
3 Leap year
4 Microsecond
Explanation:
B Lunar month, leap year and microsecond are the units of time but light year is the unit of distance and it is used to measure astronomical distance.
AP EAMCET (23.09.2020) Shift-I
Units and Measurements
139442
If \(P, Q\) and \(R\) are physical quantities having different dimensions, which of the following combination can never be a meaningful quantity?
1 \(\frac{P-Q}{R}\)
2 \(P Q-R\)
3 \(\frac{P Q}{R}\)
4 \(\frac{P R-Q^{2}}{R}\)
Explanation:
A P , Q and R are physical quantities having different dimensions. By the principle of homogeneity, the physical quantities having different dimensions, can not be added or subtracted directly. Hence, \(\frac{\mathrm{P}-\mathrm{Q}}{\mathrm{R}}\) is not a meaningful quantity.
139431
If \(\mathbf{E}\) and \(\mathbf{H}\) represent the intensity of electric field and magnetising field respectively, then the unit of \(E\) / \(H\) will be
1 ohm
2 mho
3 joule
4 newton
Explanation:
A The impedance in free space \(\left(\mathrm{z}_{0}\right)=\frac{\mathrm{E}}{\mathrm{H}}\) Thus, unit of \(\frac{\mathrm{E}}{\mathrm{H}}\) is ohm.
JEE Main-27.08.2021
Units and Measurements
139432
\(\quad\) The unit of current element is
1 A m
2 \(\mathrm{Am}^{-1}\)
3 \(\mathrm{Am}^{2}\)
4 \(\mathrm{Am}^{-2}\)
Explanation:
A The unit of current element is ampere- meter (Am).
AP EAMCET-06.09.2021
Units and Measurements
139436
Which of the following is not a unit of time?
1 Lunar month
2 Light year
3 Leap year
4 Microsecond
Explanation:
B Lunar month, leap year and microsecond are the units of time but light year is the unit of distance and it is used to measure astronomical distance.
AP EAMCET (23.09.2020) Shift-I
Units and Measurements
139442
If \(P, Q\) and \(R\) are physical quantities having different dimensions, which of the following combination can never be a meaningful quantity?
1 \(\frac{P-Q}{R}\)
2 \(P Q-R\)
3 \(\frac{P Q}{R}\)
4 \(\frac{P R-Q^{2}}{R}\)
Explanation:
A P , Q and R are physical quantities having different dimensions. By the principle of homogeneity, the physical quantities having different dimensions, can not be added or subtracted directly. Hence, \(\frac{\mathrm{P}-\mathrm{Q}}{\mathrm{R}}\) is not a meaningful quantity.
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Units and Measurements
139431
If \(\mathbf{E}\) and \(\mathbf{H}\) represent the intensity of electric field and magnetising field respectively, then the unit of \(E\) / \(H\) will be
1 ohm
2 mho
3 joule
4 newton
Explanation:
A The impedance in free space \(\left(\mathrm{z}_{0}\right)=\frac{\mathrm{E}}{\mathrm{H}}\) Thus, unit of \(\frac{\mathrm{E}}{\mathrm{H}}\) is ohm.
JEE Main-27.08.2021
Units and Measurements
139432
\(\quad\) The unit of current element is
1 A m
2 \(\mathrm{Am}^{-1}\)
3 \(\mathrm{Am}^{2}\)
4 \(\mathrm{Am}^{-2}\)
Explanation:
A The unit of current element is ampere- meter (Am).
AP EAMCET-06.09.2021
Units and Measurements
139436
Which of the following is not a unit of time?
1 Lunar month
2 Light year
3 Leap year
4 Microsecond
Explanation:
B Lunar month, leap year and microsecond are the units of time but light year is the unit of distance and it is used to measure astronomical distance.
AP EAMCET (23.09.2020) Shift-I
Units and Measurements
139442
If \(P, Q\) and \(R\) are physical quantities having different dimensions, which of the following combination can never be a meaningful quantity?
1 \(\frac{P-Q}{R}\)
2 \(P Q-R\)
3 \(\frac{P Q}{R}\)
4 \(\frac{P R-Q^{2}}{R}\)
Explanation:
A P , Q and R are physical quantities having different dimensions. By the principle of homogeneity, the physical quantities having different dimensions, can not be added or subtracted directly. Hence, \(\frac{\mathrm{P}-\mathrm{Q}}{\mathrm{R}}\) is not a meaningful quantity.
