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Electric Current and Drift Velocity MCQs

Prepare for Electric Current and Drift Velocity MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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Topic Notes: Electric Current and Drift Velocity

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Master Electric Current and Drift Velocity MCQs for Competitive Exams with our comprehensive, verified question bank. Designed for students and competitive exam aspirants across Pakistan, this study resource provides topic-wise practice questions for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests.

Exam Focus
Aligned with FPSC, PPSC, and CSS syllabus criteria for Electric Current and Drift Velocity.
Past Papers
Includes frequently repeated questions from past examinations.
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Each question features verified answers and conceptual explanations.

Preparation Guide & Key Focus Areas for Electric Current and Drift Velocity MCQs

When preparing for Electric Current and Drift Velocity MCQs (Physics), focus on core definitions, historical timelines, relevant provisions, and commonly tested factual points. Review each question below, test your knowledge against the given options, and inspect the detailed explanation to solidify your understanding.

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51
A carbon resistor connected to a battery of 50 V and 2 A current is passing through it. If voltage is increased to 75 V then current will be:
52
For a transistor, the current amplification factor is 0.8, the transistor is connected in common emitter configuration. The change in the collector current when the base current changes by 6 mA is
53
Current carriers in metal are
54
The ratio of electron and hole currents in a semiconductor is given and the ratio of drift velocities of electrons and holes is 5/4; then the ratio of number densities of electrons and holes in the semiconductor will be
55
Why does the current increase when the potential difference applied across a metallic conductor is increased?
56
43. Which of the following statements is correct?
57
If Ohm's law is valid, then drift velocity Va and electric field E are related as
58
Which of the following configurations of BJTs gives both voltage gain and current gain?
59
An AC source is connected to a resistive circuit. Which of the following is true?
60
A resistor connected to a battery is heated due to current passing through it. Which of the following quantity does not change?