Two point charges of 2 microcoulombs and 4 microcoulombs are separated by a distance of 1 meter in vacuum. What is the magnitude of the electrostatic force between them?

A. 0.072 N — The force is calculated using Coulomb's Law, F = k * q1 * q2 / r^2. Substituting the given values, F = (9 * 10^9) * (2 * 10^-6) * (4 * 10^-6) / (1)^2, which equals 0.072 Newtons.

JEE Main · PhysicsEasy

$Two point charges of q_{1} = 2 \times 1 0^{- 6} C and q_{2} = 4 \times 1 0^{- 6} C are separated by a distance of r = 1 m in vacuum. What is the magnitude of the electrostatic force F between them? (Take k = 9 \times 1 0^{9} N m^{2} / C^{2})$

A. $0.072 N$
B. $0.036 N$
C. $0.018 N$
D. $0.009 N$

Show correct answer & step-by-step solution

Correct answer: A — $0.072 N$

Solution

The force is calculated using Coulomb's Law, F = \frac{k q _{1} q _{2}}{r ^{2}} . Substituting the given values, F = (9 \times 1 0^{9}) \times \frac{( 2 \times 1 0 ^{- 6} ) \times ( 4 \times 1 0 ^{- 6} )}{1 ^{2}} = 0.072 N .

Attempt this question & track your score

Attempt & Track Free →

More Electrostatics practice questions

$Two point charges of 2 microcoulombs and 8 microcoulombs are placed 12 cm apart. The location of the neutral point where$
$An electric dipole is placed in a uniform electric field. The net force on the dipole is:$
$The electric potential at a distance r from a point charge q is given by:$
$If the distance between two point charges is doubled, the electrostatic force between them becomes:$
$The SI unit of electric flux is:$
$Two point charges of 4 microcoulombs and -2 microcoulombs are separated by a distance of 1 meter in air. At what distanc$
$A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80 volts. What is the potenti$
$An electric dipole is placed in a uniform electric field of magnitude 200 newtons per coulomb at an angle of 30 degrees$
$Three charges each equal to q are placed at the corners of an equilateral triangle of side a. What is the electric field$
$A parallel plate capacitor has plates of area 0.01 square meters separated by a distance of 0.001 meters. If the space b$
$A solid non-conducting sphere of radius R has a volume charge density rho that varies with distance r from the center as$
$A dipole with dipole moment p is placed at a distance r from along charged wire with linear charge density lambda. The f$

View all Electrostatics questions →

Two point charges of q1​=2×10−6 C and q2​=4×10−6 C are separated by a distance of r=1 m in vacuum. What is the magnitude of the electrostatic force F between them? (Take k=9×109 N m2/C2)

Solution

Attempt this question & track your score

More Electrostatics practice questions

$Two point charges of q_{1} = 2 \times 1 0^{- 6} C and q_{2} = 4 \times 1 0^{- 6} C are separated by a distance of r = 1 m in vacuum. What is the magnitude of the electrostatic force F between them? (Take k = 9 \times 1 0^{9} N m^{2} / C^{2})$