The figure below shows two lines of charge in cross-section coming out of the page. Each line of charge has a linear charge density of ±3.30 nC/cm and they are separated by a distance d = 19.5 cm. What is the magnitude of the electric field at the dot, a point y = 6.70 cm above the midpoint between the lines?

Consider a point 0.5 mm above the midpoint of the two charges. As you can verify by removing one of the positive charges, the electric field due to only one of the positive charges is about 18 V/mV/m . What is the magnitude of the total electric field due to both charges at this location?

A charge +Q and a charge -2Q are a distance 3x apart. Point P is on the line joining thecharges, at a distance x from +Q.P+Q −2Qx 2xThe magnitude of the electric field produced at P by the charge +Q alone is E.What is the total electric field at P

+9.70 nC of charge is uniformly distributed along the top half of a thin rod of total length L = 8.00 cm, while -9.70 nC of charge is uniformly distributed along the bottom half of the rod, as shown in the figure. What is the magnitude of the electric field at the dot, a distance r = 21.8 cm from the centre of the rod?

A charge per unit length λ = +5.26 μC/m is uniformly distributed along the positive y-axis from y = 0 to y = +a = +0.531 m. A charge per unit length λ = −5.26 μC/m is uniformly distributed along the negative y-axis from y = 0 to y = −a = −0.531 m. What is the magnitude of the electric field at a point on the x-axis a distance x = 0.291 m from the origin? (You may enter your calculation using scientific notation.)  N/C

Consider three charges at points 𝑥1, 𝑦1 = (2.6 m, 1.2 m), 𝑥2, 𝑦2 = (3.7 m, 7.8 m), 𝑥3, 𝑦3 = (9.3 m, 5.2 m) with charges 𝑞1 = 7 nC, 𝑞2 = −9.6 nC, 𝑞3 = 4.7 nC. What is the magnitude of the electric field at the origin (𝑥 = 0, 𝑦 = 0) in N/C? (10 marks)