A) धारा घनत्व
B) धारा
C) अपवाह वेग
D) विद्युत क्षेत्र
सही उत्तर: B
चूँकि चालक का अनुप्रस्थ-काट असमान है, इसलिए धारा घनत्व भिन्न-भिन्न होगा। चूँकि
$ I=JA $ …(i)
समी. (i) से स्पष्ट है कि जब क्षेत्रफल बढ़ता है तो धारा घनत्व घटता है, अतः इलेक्ट्रॉनों की संख्या समान रहती है और इस प्रकार धारा नियत रहती है।
The Ministry of Education has launched the SATHEE initiative in association with IIT Kanpur to provide free guidance for competitive exams. SATHEE offers a range of resources, including reference video lectures, mock tests, and other resources to support your preparation. Please note that participation in the SATHEE program does not guarantee clearing any exam or admission to any institute.
Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this
journey of growth together! 🌐📚🚀🎓
I'm relatively new and can sometimes make mistakes.
If you notice
any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on
Please select your preferred language
BETA
