AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

Q.

A particle of mas s m carrying charge 'q' is projected with velocity ‘v’ from point 'A' towards an infinite line of charge from a distance 'a'. Its speed reduces to zero momentarily at point 'B' which is at a distance a/2 from the line of charge. If another particle with mass m and charge '-q' is projected with the same velocity 'v' from 'A' towards the line of charge. If v=102m/s, what will be its speed (in m/s) at 'B'?

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

answer is 20.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

Applying conservation of mechanical energyΔK+ΔU=0 or Kf−Ki+qVf−Vi=0 ………(i)When a positive charge is projected towards the wire0−12mv2+qΔV=0⇒12mv2=qVB−VA …….(ii)When a negative charge is projected towards the wire 12mvB2−12mv2+(−q)ΔV=0⇒12mvB2−12mv2=qVB−VA ………(iii)From (ii) and (iii), we get 12mv2=12mvB2−12mv2⇒vB2=2v2 or vB=2v =2×102=20m/s

Watch 3-min video & get full concept clarity

courses

No courses found

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Not sure what to do in the future? Don’t worry! We have a FREE career guidance session just for you!

A particle of mas s m carrying charge 'q' is projected with velocity ‘v’ from point 'A' towards an infinite line of charge from a distance 'a'. Its speed reduces to zero momentarily at point 'B' which is at a distance a/2 from the line of charge. If another particle with mass m and charge '-q' is projected with the same velocity 'v' from 'A' towards the line of charge. If v=102m/s, what will be its speed (in m/s) at 'B'?