Home
Class 12
PHYSICS
Two similar charges repel each other wit...

Two similar charges repel each other with a force of 44.1 N when placed 2 cm apart in air. Calculate the strength of charge.

Text Solution

Verified by Experts

F = 44.1 N
`r =2 cm = 2 xx 10^(-2) m`
`q_1 =q_2 ` (say)
`F=1/(4piin_0)(q_1q_2)/(r^2)`
`F=(1)/(4piin_0)q^2/r^2`
`44.1 = 9 xx10^(9)xx(q^2)/((2xx10^(-2)))`
`q^2 = (44.1 xx4 xx10^(-4))/(9 xx10^(-9))=49xx4xx10^6`
`q = 14 xx10^3C`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND ELECTROSTATIC FORCE

    BETTER CHOICE PUBLICATION|Exercise NUMERICAL PROBLEMS (MOST EXPECTED NUMERICALS )|6 Videos

  • ELECTRIC CHARGES AND ELECTROSTATIC FORCE

    BETTER CHOICE PUBLICATION|Exercise LONG ANSWER TYPE QUESTIONS |3 Videos

  • DIPERSION OF LIGHT

    BETTER CHOICE PUBLICATION|Exercise MOST EXPECTED QUESTIONS|5 Videos

  • ELECTRIC CURRENT, RESISTANCE AND E.M.F.

    BETTER CHOICE PUBLICATION|Exercise MOST EXPECTED QUESTIONS |14 Videos

Similar Questions

Explore conceptually related problems

Two similar charges repel each other with a force of 44.1 Newton when placed 2cm apart in air. Calculate the strength of charge.

Two poles , one of which is 3 times as strong as the other, exert on each other a force equal to 3 xx 10^-3 N , when placed 10 cm apart in air. Find the strength of each plane.

Two small spheres each of mass 10^6kg are suspended from a point by silk threads 50 cm long. These are equally charged and repel each other to a distance of 20 cm apart. Calculate the charge on each sphere. Take g = 10 ms^-2

Two equal charges placed in air and separated by a distance of 2 m repel each other with a force of 10^-4 N. Calculate the magnitude of either of the charges.

Two points charges of +3muC and +8muC repel each other with a force of 40 N . A charge of -5muC is added to each of them. Now, the force will be

Two equal charges placed in air separated by a distance 3 m repel each other with force 0.1 g f. Calculate the magnitude of either of the charges.

Two point charges of +2 muC and + 6 muC repel each other with a force of 12 N. If each is given additional charge of -4 muC , what will be the new force ?

Two magnetic poles, one of which is four times stronger than the other exert a force of 5 gf on each other, whe placed at distance of 10 cm in air. Find the strength of each pole.