Which statement is correct
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(a) N-type germanium is negatively charged and P-type germanium is positively charged |
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(b) Both N-type and P-type germanium are neutral |
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(c) N-type germanium is positively charged and P-type germanium is negatively charged |
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(d) Both N-type and P-type germanium are negatively charged |
(b) Both N-type and P-type germanium are neutral
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Current i is carried in a wire of length L. If the wire is turned into a circular coil, the maximum magnitude of torque in a given magnetic field B will be
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(a) |
(a) |
(c) |
(d) |
The a-particle is the nucleus of an atom of
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(a) Neon |
(b) Hydrogen |
(c) Helium |
(d) Deuterium |
Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added
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(a) The material obtained will be N-type germanium in which electrons and holes are equal in number |
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(b) The material obtained will be P-type germanium |
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(c) The material obtained will be N-type germanium which has more electrons than holes at room temperature |
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(d) The material obtained will be N-type germanium which has less electrons than holes at room temperature |
