CBSE Class 12-science Answered
Two identical metal spheres have charges +15μC and +25μC areseparated by a distance. If the spheres are first brought into contact and then separated to the original distance, then the ratio of the new force to the previous force is
Asked by mohammedmuhsin786786 | 01 Jul, 2021, 08:33: PM
Expert Answer
Let q1 and q2 are the charges on sphere after they are made to get contact with each other.
When they are in contact , both spheres are at same potential.
Since both spheres are identical, and they are at same potential, then q1 = q2
Since intial charges on spheres are 15 μC and 25 μC , by conservation of charge , we have
q1 + q2 = ( 15 + 25 ) μC = 40 μC
Hence , we get , q1 = q2 = 20 μC .
If the distance between the charges are equal , mutual repulsion force is proportional to the
product of their charge magnitudes.
Hence ratio of new force to previous force = ( 20 × 20 ) / ( 15 × 25 ) = 16/15
Answered by Thiyagarajan K | 01 Jul, 2021, 09:52: PM
Concept Videos
CBSE 12-science - Physics
Asked by rishabhverma895334 | 01 Mar, 2024, 07:24: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by rameshsanju123 | 08 Feb, 2024, 08:45: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by bhatig9772 | 09 Jan, 2023, 06:48: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by bhagawan5225 | 06 May, 2022, 05:58: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by nonuhasan2 | 28 Nov, 2021, 09:43: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by komalshakatawat18 | 19 Sep, 2021, 05:47: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by jangraarti2 | 31 Jul, 2021, 07:12: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by aditya.loya9821 | 23 Jul, 2021, 06:44: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by raghavsumit9690 | 10 Jul, 2021, 01:30: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mohammedmuhsin786786 | 01 Jul, 2021, 08:33: PM
ANSWERED BY EXPERT