JEE Main 201219 MayOnline
- Exam
- JEE Main
- Year
- 2012
- Date
- 19 May
- Mode
- Online
- Subject
- Physics
- Chapter
- Electromagnetic Induction
JEE Main 2012 · 19 May · Online · Physics · Electromagnetic Induction
This question has Statement 1 and Statement 2. Of the four choices...
This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement 1: Self inductance of a long solenoid of length , total number of turns and radius is less than .
Statement 2: The magnetic induction in the solenoid in Statement 1 carrying current is in the middle of the solenoid but becomes less as we move towards its ends.
Options
- AStatement 1 is true, Statement 2 is false.
- BStatement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1.
- CStatement 1 is false, Statement 2 is true.
- DStatement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1.
Correct answer
B. Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1.
Step-by-step solution
Self inductance of a long solenoid is given by
L=Magnetic field at the centre of solenoid
B=So both the statements are correct and statement 2 is correct explanation of statement 1