1800-150-456-789
FlagBACK
Flag Electrostatics> Coloumb's Law...
question mark

(1) Two particles, each of mass m and carrying charge Q, are separated by some distance.If they are in equilibrium under mutual gravitational and electrostatic forces,then Q/m (in C/Kg) is of the order of(a) 10-5(b) 10-10(c) 10-15(c) 10-20

Nimish Singh , 11 Years ago
Grade 11
anser 5 Answers
Mujahid Ahmed

Last Activity: 11 Years ago

K Q2/r2 = Gm2/r2

Q2/m2 = G/K

= 6,6 x 10-11/9 x 109

= 10-20

 

Approve if i helped :)

Abhishekh kumar sharma

Last Activity: 11 Years ago

10^-15

anurag hundal

Last Activity: 11 Years ago

guess its c!

Jatin Singh

Last Activity: 8 Years ago

repulsive electrostatic force:                         attractive gravitational force:
F1=kQ^2/r^2                                                   F2=Gm^2/r^2
 
for equilibrium :F1=F2
kQ2/r2=Gm2/r2
=> Q/m = (6.6*10^-11/9*10^9)1/2
=> Q/m=0.8*10-10
Hence, ORDER OF Q/m=10-10
 

Kushagra Madhukar

Last Activity: 4 Years ago

Dear student,
Please find the solution to your problem below.
repulsive electrostatic force(since charges are same in magnitude and sign):            
F1 = kQ2/r2                                                 
attractive gravitational force:
F2 = Gm2/r2
for equilibrium :F1 = F2
kQ2/r2 = Gm2/r2
=> Q/m = (6.6*10-11/9*109)1/2
=> Q/m=0.8*10-10
Hence, ORDER OF Q/m=10-10
Hence (b) is the correct option.
 
Hope it helps.
Thanks and regards,
Kushagra

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on Electrostatics

question mark
Electrostatics question based on earthing of spherical shell
Electrostatics
0 Answer Available

Last Activity: 2 Year ago(s)

question mark
an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??
Electrostatics
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
A wire with a linear charge density lambda forms a quarter of a cjrclenof radius R and is placed asa shown in thefigure with its centre of curvature at the origin O the electric field at O will be
Electrostatics
0 Answer Available

Last Activity: 2 Year ago(s)

question mark
Find the value of q so that system remains in equilibrium.. figure attached below
Electrostatics
0 Answer Available

Last Activity: 2 Year ago(s)

question mark
Find the value of q so that system remains in equilibrium
Electrostatics
0 Answer Available

Last Activity: 2 Year ago(s)