- 1(current)
Q. No.
1. \( B=\mu_{0}\left(H+I\right)\)
2. \(I=\mu_0\left(H+B\right)\)
3. \(H=\mu_0\left(I+B\right)\)
4. \(B=2H\left(I+\mu_0\right)\)
An iron rod of susceptibility \(599\) is subjected to a magnetizing field of \(1200~\text{A m}^{-1}.\) The permeability of the material of the rod is:
\((\mu_0 = 4 \pi\times 10^{-7}~\text{T mA}^{-1})\)
1. \(8.0\times 10^{-5}~\text{T mA}^{-1}\)
2. \(2.4\pi\times 10^{-5}~\text{T mA}^{-1}\)
3. \(2.4\pi\times 10^{-7}~\text{T mA}^{-1}\)
4. \(2.4\pi\times 10^{-4}~\text{T mA}^{-1}\)
A solenoid has a core of material with relative permeability \(400\). The windings of the solenoid are insulated from the core and carry a current of \(2~\text{A}\). If the number of turns is \(1000\) per metre, the magnetization, \(M\) is:
| 1. | \(8\times10^{5}~\text{A/m}\) | 2. | \(6\times10^{5}~\text{A/m}\) |
| 3. | \(6.5\times10^{5}~\text{A/m}\) | 4. | \(8.9\times10^{5}~\text{A/m}\) |
1. \(1.33\times10^8\)
2. \(0.75\times10^{-8}\)
3. \(12\times10^{-8}\)
4. \(14\times10^{-8}\)
| 1. | \(\dfrac{\text { weber }}{\text { ampere }} \) | 2. | \(\dfrac{\text { henry }}{\text { ampere }} \) |
| 3. | \(\dfrac{\text { tesla }}{\text { ampere - metre }} \) | 4. | \(\dfrac{\text { weber }}{\text { ampere -} \text { metre }}\) |
A solenoid has a core of material with relative permeability \(400.\) The windings of the solenoid are insulated from the core and carry a current of \(2~\text{A}\). If the number of turns is \(1000\) per metre, the magnetising field \(B\) is:
| 1. | \(10~\text{T}\) | 2. | \(1~\text{T}\) |
| 3. | \(0.1~\text{T}\) | 4. | \(2~\text{T}\) |
1. \(0.75~\text{A}\)
2. \(75~\text{A}\)
3. \(1.33~\text{A}\)
4. \(133~\text{A}\)
A solenoid has a core of material with relative permeability \(400.\) The windings of the solenoid are insulated from the core and carry a current of \(2~\text A.\) If the number of turns is \(1000\) per metre, the magnetic field intensity \(H\) is:
1. \(2\times10^2~\text{A/m}\)
2. \(2\times10^3~\text{A/m}\)
3. \(2~\text{A/m}\)
4. \(20~\text{A/m}\)
- 1(current)
Q. No.
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