- AStationary magnetic field
- BConduction current
- CEddy current
- DDisplacement current
Explanation:
By Maxwell
$\text{I}_\text{d}=\frac{\in\text{dE}}{\text{dt}}$
dE is electric field
Id is displacement current per unit area.
Hence changing electric field gives displacement current.
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Isotopes are atoms having
|
(a) Same number of protons but different number of neutrons |
|
(b) Same number of neutrons but different number of protons |
|
(c) Same number of protons and neutrons |
|
(d) None of the above |
X – rays and γ - rays of the same energies may be distinguished by
|
(a) Their velocity |
(b) Their ionising power |
|
(c) Their intensity |
(d) Method of production |
For harder X-rays
| (a) The wavelength is higher | (b) The intensity is higher |
| (c) The frequency is higher | (d) The photon energy is lower |
Four resistances are connected in a circuit in the given figure. The electric current flowing through 4 ohm and 6 ohm resistance is respectively

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(a) 2 amp and 4 amp |
(b) 1 amp and 2 amp |
|
(c) 1 amp and 1 amp |
(d) 2 amp and 2 amp |