Electricity and Magnetism Answers

A radio set is retuned from the 108MHz to 90.5MHz station using the variable capacitor.By what factor is the capacitance changed

In the figure particle 1 of charge q₁ = -5.34q and particle 2 of charge q₂ = +1.84q are fixed to an x axis. As a multiple of distance L, at what coordinate on the axis is the net electric field of the particles zero?

Explain the behavior of a diffracted wave on

a) a slit

b) the aperture

Two charged particles are 8.45 cm apart. They are moved and the force on each of them is found to have tripled. How far are they now?

If a proton at a particular distance from a charged particle is repelled with a given force, by how much will the force decrease when the proton is 3 times farther away from the particle?

Apply ing the gauss,'law, prove that the sta le equilibrium(to hold a charged body) is not possible by a static system of charge alone.

A farmed painting weighs 30kg. The two wires supporting it makes an angle of 120° with each other. What are the tensions in the wire?

“Write the name of at least five modern devices, whose working principle is based on Maxwell Equations

Two equal positive point charges q1=q2=2µC interact with a third point charge q3=4µC. Find

the magnitude and direction of the total (net) force on q3. (q1 is 0.3m above the origin; q2 is

0.3m below the origin; q3 is 0.4m right from the origin).

Calculate the buoyant force on a cube of metal with an edge of 1.3 cm that is placed in salt water. The density of the metal is 7.86 x 103 kg/m², and the density of the salt water is 1.025 x 103 kg/