Electric Current Through Conductors — Class 11 MCQs with Answers
Class 11 CBSE Physics · Chapter 305
40 practice questions · 20 Easy · 20 Medium · Updated
Practise the most important Class 11 CBSE Physics questions from Chapter 305, "Electric Current Through Conductors". You get 4 timed quizzes made from 40 NCERT-based MCQs, with answers and explanations. The questions are split into 20 Easy and 20 Medium. Warm up on the basics, then move on to the exam-level questions that set top scorers in CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG apart.
To score well in "Electric Current Through Conductors", focus on numericals, derivations and applying concepts. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This trains you to stay accurate under time pressure, as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Electric Current Through Conductors, then move to Medium to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 11 Physics mastery score. 6 sample questions are solved in full below, with the answer and a worked explanation. Sign in free to start practising.
Key concepts: Electric Current Through Conductors (Class 11 Physics)
Charge in motion through conductors: current and drift velocity, Ohm's law with resistance and resistivity and their temperature dependence, series and parallel networks, EMF and internal resistance, Kirchhoff's two rules, the Wheatstone bridge with the metre bridge and potentiometer, and electrical power and Joule heating.
- Electric current
- The rate of flow of charge through a cross-section. Conventional current is taken along the flow of positive charge, opposite to the actual electron drift.
- Drift velocity
- The slow net velocity electrons acquire in a field, of order 10⁻⁴ m s⁻¹ — far slower than the near-light-speed at which the electric signal itself travels.
- Current and drift velocity
- Related by I = neAv_d, which is what links the macroscopic current to the microscopic motion of the charge carriers.
- Mobility
- The drift velocity acquired per unit electric field. It is higher for electrons than for holes, which is why n-type devices tend to be faster.
Electric Current Through Conductors — important questions & MCQs with answers (Class 11 Physics)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. The other 34 are timed and scored when you sign in.
- Q1Easy
The SI unit of resistivity (ρ) is:
A.ohmB.ohm/metreC.ohm-metre✓ CorrectD.siemensAnswer: C. ohm-metre
Explanation: R = ρL/A ⇒ ρ has units of ohm × metre.
- Q2Easy
Kirchhoff's current law (KCL) is based on conservation of:
A.EnergyB.Charge✓ CorrectC.MassD.MomentumAnswer: B. Charge
Explanation: Sum of currents at a node = 0 ⇒ charge is conserved (no charge accumulates at a junction).
- Q3Easy
Equivalent resistance of n equal R in series:
A.R/nB.RC.nR✓ CorrectD.R²Answer: C. nR
Explanation: Series adds: R_eq = nR.
- Q4Medium
A wire of length 2 m and cross-section 1 mm² has resistivity 1.7 × 10⁻⁸ Ωm. Its resistance is approximately:
A.0.34 ΩB.0.034 Ω✓ CorrectC.3.4 ΩD.34 ΩAnswer: B. 0.034 Ω
Explanation: R = ρL/A = (1.7 × 10⁻⁸ × 2) / (1 × 10⁻⁶) = 3.4 × 10⁻² = 0.034 Ω.
- Q5Medium
In a loop, sum of IR drops = sum of EMFs is essentially:
A.KCLB.Ohm's lawC.KVL✓ CorrectD.Joule's lawAnswer: C. KVL
Explanation: Kirchhoff's voltage law (KVL).
- Q6Medium
A cell of emf ε and internal resistance r drives current I through external resistance R. The terminal voltage is:
A.V = εB.V = ε + IrC.V = IR + IrD.V = ε − Ir✓ CorrectAnswer: D. V = ε − Ir
Explanation: Some emf is dropped across internal resistance; V = ε − Ir.
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Start this chapter free →Electric Current Through Conductors — FAQs
What are the key concepts in Class 11 Physics Electric Current Through Conductors?+
Charge in motion through conductors: current and drift velocity, Ohm's law with resistance and resistivity and their temperature dependence, series and parallel networks, EMF and internal resistance, Kirchhoff's two rules, the Wheatstone bridge with the metre bridge and potentiometer, and electrical power and Joule heating. Key ideas include Electric current, Drift velocity, Current and drift velocity, Mobility.
What does Class 11 Physics Chapter 305 (Electric Current Through Conductors) cover on XamBaaz?+
It has 40 NCERT-based MCQs on "Electric Current Through Conductors": 20 Easy and 20 Medium. Together they make 4 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG.
Are these "Electric Current Through Conductors" questions free to practise?+
Yes. Sign in with Google to practise "Electric Current Through Conductors" free. Full unlimited access is ₹999/year on a launch offer until 1 December 2026. No chapter is charged separately.
How should I revise "Electric Current Through Conductors" for the exam?+
Start with the Easy quiz to check your basics, then try Medium to practise applying them. There are 4 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Electric Current Through Conductors" MCQs available with answers?+
Yes. 6 sample questions are shown here in full, each with the correct option and a step-by-step "Why" explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Electric Current Through Conductors" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip, the same negative marking as JEE Main, JEE Advanced and NEET UG. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Electric Current Through Conductors (Class 11 Physics)?+
The questions that matter most test Electric current, Drift velocity, Current and drift velocity, Mobility. This page shows 6 solved important MCQs with answers and explanations; all 40 questions on the chapter are available as timed quizzes once you sign in.
Is there an online quiz for Electric Current Through Conductors?+
Yes — Class 11 Physics Electric Current Through Conductors has timed online quizzes at Easy and Medium levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.