রাম 50 W এবং 220 V হিসাবে রেট করা একটি বাল্ব কিনেছে। যখন এটি একটি 220 V সরবরাহের সাথে সংযুক্ত থাকে, তখন এর রোধ ক্ষমতা কত হবে?

This question was previously asked in
RRB Group D 17 Sept 2022 Shift 3 Official Paper
View all RRB Group D Papers >
  1. 868 Ω
  2. 968 Ω
  3. 1098 Ω
  4. 1068 Ω

Answer (Detailed Solution Below)

Option 2 : 968 Ω
Free
RRB Group D Full Test 1
3.3 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

সঠিক উত্তর হল বিকল্প 2) 968 Ω

প্রদত্ত:

\(P=50W,V=220V\)

সূত্র:

\(P={V^2\over R}\)

গণনা:

\(P={V^2\over R}\)

\(R={V^2\over P}\)

\(R={220^2\over 50}\)

\(R={48400\over 50}=968Ω\)

সুতরাং, বাল্বের রোধ হল 968 Ω

Latest RRB Group D Updates

Last updated on Jul 18, 2025

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Exam Date will be announced on the official website. It is expected that the Group D Exam will be conducted in August-September 2025. 

-> The RRB Group D Admit Card 2025 will be released 4 days before the exam date.

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a NAC granted by the NCVT.

-> Check the latest RRB Group D Syllabus 2025, along with Exam Pattern.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

Get Free Access Now
Hot Links: teen patti joy 51 bonus teen patti app teen patti master downloadable content teen patti yas