Success TrackerSuccess Tracker
Log inSign up

GATE EC 2025 Set 1 — Question 48

Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.
MCQ+2 / -0.67MediumEinstein RelationCarrier TransportElectronic Devices

Electronic Devices → Carrier Transport → Einstein Relation

Last updated

Question

The electron mobility μn\mu_n in a non-degenerate germanium semiconductor at 300 K300\text{ K} is 0.38 m2/Vs0.38\text{ m}^2/\text{Vs}.
The electron diffusivity DnD_n at 300 K300\text{ K} (in cm2/s\text{cm}^2/\text{s}, rounded off to the nearest integer) is _______.
(Consider the Boltzmann constant kB=1.38×10−23 J/Kk_B = 1.38 \times 10^{-23}\text{ J/K} and the charge of an electron e=1.6×10−19 Ce = 1.6 \times 10^{-19}\text{ C}.)
Your answer

Choose one option, then check your answer.

The solution stays hidden until you check.

Continue learning with Success Tracker

A step still unclear? Work through it with support

Use Success Tracker to ask about the reasoning, then try another GATE EC question to check your understanding.

AI-powered practice· Unlimited practice on eligible plans
PYQs with solutions
Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
Practice that adapts
Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
AI doubt support
Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.

Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.

Start with a free accountView plans and allowances

This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.

More questions on Carrier Transport

2026 Set 1 Q14Consider carrier transport in a Zener diode in the breakdown region. Which is the dominant…2026 Set 1 Q18Consider the circuit shown in the Figure with Vi=3 VV_i = 3\text{ V} and VCC=12 VV_{CC} = 12\text{ V}. Assume…2026 Set 1 Q25Consider a p-n junction diode when it is forward biased with 2 V. Which of the following is/are the…2026 Set 1 Q29Figure shows the output characteristics of two different Bipolar Junction Transistors (BJT), BJT 1…2026 Set 1 Q54Consider an LED based on a direct bandgap semiconductor material with energy bandgap 1.31.3 eV.…