- ASilver
- BMica
- CCopper
- DSilicon
Explanation:
The resistivities of semiconductors lie between 10-6 Ωm and 104 Ωm. A semiconductor material has an electrical conductivity value falling between that of a conductor, such as metallic aluminum, and an insulator, such as wood. Silicon and germanium are typical semiconductors.
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If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then
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(a) The electron will turn to its right |
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(b) The electron will turn to its left |
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(c) The velocity of the electron will increase |
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(d) The velocity of the electron will remain unchanged |
In the circuit shown P ≠ R, the reading of the galvanometer is same with switch S open or closed. Then
|
(a) |
(b) |
(c) |
(d) |