Current Electricity-Drift Velocity [JEE (Based on NTA Guidelines-IIT Engg.) Mains Physics]: Questions 1 - 4 of 9
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Question 1
Appeared in Year: 2006
Question MCQ▾
If the ratio of the concentration of electrons that of holes in a semiconductor is and the ratio of currents is then what is the ration of their drift velocities? (AIEEE)
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Choice (4) | Response | |
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a. | ||
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d. |
Question 2
Appeared in Year: 2021
Question Match List-Ⅰ List-Ⅱ▾
Column-I gives certain physical terms associated with flow of current through a metallic conductor.
Column-II gives some mathematical relations involving electrical quantities. Match Column-I and Column-II with appropriate relations.
List-Ⅰ (Physical Terms) | List-Ⅱ (Mathematical Relations) |
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(A) Electrical Resistivity | (i) |
(B) Drift Velocity | (ii) |
(C) Current Density | (iii) |
(D) Relaxation Period | (iv) |
Choices
Choice (4) | Response | |
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a. |
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b. |
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c. |
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d. |
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Question 3
Question MCQ▾
At room temperature, copper has free electron density of . The electron drift velocity in a copper conductor of cross-sectional area and carrying a current of , will be –
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Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 4
Question MCQ▾
The drift velocity of free electrons in a conductor is , when a current. is flowing in it If both the radius and current are doubled, then drift velocity will be ________.
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |