प्रतिरोधक 25 kΩ के एक तार से प्रवाहित होने वाली धारा को (mA में) ज्ञात कीजिए, जब 12.5 V का एक विभवांतर इसके सिरों पर लगाया जाता है।

This question was previously asked in
RRB ALP Fitter 21 Jan 2019 Official Paper (Shift 2)
View all RRB ALP Papers >
  1. 0.5
  2. 2
  3. 5
  4. 0.2

Answer (Detailed Solution Below)

Option 1 : 0.5
Free
General Science for All Railway Exams Mock Test
2.1 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

अवधारणा:

  • ओम का नियम: नियत तापमान पर, धारा ले जाने वाले तार का विभव अंतर इसके माध्यम से प्रवाहित होने वाली धारा के समानुपाती होता है।

अर्थात V = IR

जहां V = विभव अंतर, R = प्रतिरोध और I = धारा

व्याख्या:

दिया गया है,

प्रतिरोध (R) = 25 kΩ = 25 × 103Ω

विभवांतर (V) = 12.5 V

ओम के नियम का उपयोग करने पर,

\(V=IR\)

I=\(V\over R\)

उपरोक्त मानों को रखने पर,:

I =\(12.5\over25\times10^3\)\(=0.5\times10^{(-3)} A\)

धारा (I) = 0.5 mA

  • तार के माध्यम से बहने वाली विद्युत धारा 0.5 mA है। तो विकल्प 1 सही है।
Latest RRB ALP Updates

Last updated on Jun 11, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in

-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025. 

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.

->The candidates must have passed 10th with ITI or Diploma to be eligible for this post. 

->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.

-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways. 

-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.

-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here

More Physics Questions

Get Free Access Now
Hot Links: teen patti bonus teen patti gold download apk teen patti yes teen patti all