Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
1.9k views
in Physics by (45.7k points)

If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be 

(a) 100 % 

(b) 200 % 

(c) 300 % 

(d) 400 %

1 Answer

+1 vote
by (46.2k points)
selected by
 
Best answer

The answer is (c) 300%

  • Heat generated by a resistor is directly proportional to square of current.
  • Hence, when current becomes double, dissipation of heat will multiply by 2 =4. 
  • This means there will be an increase of 300%.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...