Two unlike charges separated by a distance of 1m attract each other with a force 0.108N. If the charges are in the ratio 1:3, the weak charge is?A. 2 micro C ,B. 4 micro C, C. 6 micro C, D. 5 microC

2 years ago

Share

Answers : (4)

                                        

Here q1:q2=1:3,


3q1=q2,


we know F=k(q1q2)/(r2)


where k=9x109N-m2/C2


thus 0.108=9x109(3(q2)2)/12


q2=2x10-6C


therefore the weak charge is 2micro C.

2 years ago
                                        

i think it is 2 microC

2 years ago
                                        

let charges be x,3x;


 


f=3x*x*9*10^9          =>x= 2 micro

2 years ago
                                        

The answer is 4 micro C. But it could be wrong.

2 years ago

Post Your Answer

More Questions On Electrostatics

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
In hydrogen – like atom (z = 11), nth line of Lyman series has wavelength λ. The de- Broglie’s wavelength of electron in the level from which it originated is also λ. Find the value of n?
 
 
Hello Student, Please find the answer to your question Note : nth line of Lyman series means electron jumping from (n + 1 )th orbit to 1 st orbit. For an electron to revolve in (n + 1)th...
  img
Navjyot Kalra 3 months ago
An electric bulbis marked 250v - 200v.What information do markings convey? How many joules of energy is consumed by the bulb in one hour? How long will it take for the bulb to consume one...
 
 
The bulb must be marked as 250W-200V. Both the markings are not in volt ,one defines the power and other the voltage at which the bulb operates. Energy consumed in one hour =Power...
  img
Ashish Kumar 9 months ago
 
It must be marked as 250W-200V. The first is the power rating (the power that is consumed by the bulb) and the second is the voltage rating (the voltage at which the bulb operates. energy...
  img
Ashish Kumar 9 months ago
A PARTICLE MOVES RECTILINEARLY.ITS DISPLACEMENT ‘x’ AT TIME ‘t’ IS GIVEN BY x(square)=at(square)+b. ITS ACCELERATION AT TIME ‘t’ IS PROPORTIONAL TO? (A) 1/x(cube) (B)1/x-1/x(square)...
 
 
Dear student, The displacement is given by the expression: Hence, differentiating with respect to time, we get: Hence,the derivative of velocity would be given by: Regards Sumit
  img
Sumit Majumdar one month ago
View all Questions »