Electric Charges and Fields questions
340 published questions with worked solutions.
- Two charges, each equal to q, are kept at x = – a and x = a on the x-axis. A particle of mass m and charge q_0 = q 2 is placed at...
- The electrostatic potential in a charged spherical region of radius r varies as V = ar^3+b, where a and b are constants. The...
- Identify the correct statements : A. Electrostatic field lines form closed loops. B. The electric field lines point radially...
- The electric flux is = + where λ and σ are linear and surface charge density, respectively, ( ) represents
- A positive ion A and a negative ion B has charges 6.67 10^ -19 C and 9.6 10^ -10 C, and masses 19.2 10^ -27 kg and 9 10^ -27 kg...
- A point charge causes an electric flux of –2 × 10^4 Nm^2C^ -1 to pass through a spherical Gaussian surface of 8.0 cm radius,...
- A point charge + q is placed at the origin. A second point charge +9q is placed at (d, 0, 0) in Cartesian coordinate system. The...
- An infinitely long wire has uniform linear charge density = 2nC/m. The net flux through a Gaussian cube of side length 3 cm, if...
- The electric field in a region is given by E = (2 i +4 j +6 k ) 10^3 N/C. The flux of the field through a rectangular surface...
- Two identical conducting spheres, A and B, carry equal charge. They are separated by a distance much larger than their diameter,...
- The bob of a simple pendulum has mass 2 g and a charge of 5.0 μC. It is at rest in a uniform horizontal electric field of...
- Four point charges −q, +q, +q and −q are placed on y-axis at y = −2d, y = −d, y = +d, y = +2d, respectively. The magnitude of the...
- A uniformly charged ring of radius 3a and total charge q is placed in xy-plane centred at origin. A point charge q is moving...
- Two point charges q_1 ( 10 μC) and q_2 (−25 μC) are placed on the x-axis at x = 1 m and x = 4 m respectively. The electric field...
- For a uniformly charged ring of radius R, the electric field on its axis has the largest magnitude at a distance h from its...
- Three charges +Q, q, +Q are placed respectively, at distance, 0, d/2 and d from the origin, on the x-axis. If the net force...
- Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by ρ(r) = kr, where r is the distance...
- Suppose a uniformly charged wall provides a uniform electric field of 2 10^4 N/C normally. A charged particle of mass 2 g being...
- Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle θ with each other. When...
- An infinite plane sheet of charge having uniform surface charge density +σ_s C/m^2 is placed on x-y plane. Another infinitely...
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