Which is the most abundant gas in the atmosphere

The electric field of a wire with positive linear charge density, λ, can be written as E~ = 2kλ r rˆ Represent the field of the wire using a set of arrows at at least 3 different distances from the wire. Use at least 4 arrows for each distance.

1 A +2.0nC charge is located at (−1.5m, 0). An -2.0nC charge is located at (+1.5m, 0). The point P is located at (0, 2.6m). (a)[4 pt(s) ]Draw the above system, and draw the individual and resultant electric field vectors at point P. (b)[6 pt(s) ]Find the electric field at point P. (c)[2 pt(s) ]A −10µC charge is placed at point P, find the electric force on this charge.

The figure shows three currents of equal size i. Two of the currents are out of the page, and the other is into the page. Also shown in the figure are four numbered Amperian loops. List the loops in order from smallest to largest H B~ ·d ~l along the loop, and explain the reasons for the ordering you chose

you have a capacitor and two resistors. how should the resistors be connected to produce the circuit with the highest time constant

A square parallel plate capacitor with plate area A = 100cm2 has plate separation ℓ = 3mm. The airspace between the plates is partially filled by two d = 1mm thick dielectric slabs. One slab has κ1 = 2.5 and the other slab has κ2 = 4. Compute the capacitance, in the infinite parallel plate approximation of the system. Report both a symbolic and numeric value

Problem 2

A square conducting slab with 10m sides carries a net charge of 10µC.

(a)Use Gauss’ law to find E~ inside the slab and close to its surfaces, far from the edges of the slab.

(b)The slab is placed to the right of an infinite charged nonconducting plane with charge density σ = 2 × 10−6 C m2 so that the faces of the slab are parallel to the plane. Find the electric field on each side of the slab far from its edges and the charge density on each face