PART A Draw the equipotential lines on the following electric fields. Part B. Let's Solvel Equipotential surfaces and their relation to the electric field 1. Dry air will support a maximum electric field strength of about 2.0 x 108 V/m. Above that value, the field creates enough ionization in the air to make the air a conductor. This allows a discharge or spark that reduces the field. What, then, is the maximum voltage between two parallel conducting plates separated by 3.5 cm of dry air? 2. An equipotential surface that surrounds a + 3.0 JC point charge has a radius of 2.0 cm. What is the potential of this surface? 3. A spark plug in an automobile engine consists of two metal conductors that are separated by 0.5 mm. When an electric spark jumps between them, the magnitude of the electric field is 4.0 x 107 V/m. What is the magnitude of the potential difference AV between the conductors? PART C. SOLVING IS FUN! CAPACITOR 1. Calculate the voltage of a battery connected to a parallel plate capacitor with a plate area of 3.0 cm^2 and a plate separation of 5mm if the charge stored on the plate is 6.0 pC. 2. A cylindrical capacitor has a length of 6 cm is made of two concentric rings with an inner radius of 2.5 cm and an outer radius of 3.5 cm. How much charge is present in this capacitor if it is connected to a 15 V battery. 3. A spherical capacitor has an inner sphere of radius 10 cm and an outer sphere of radius 14 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5uC. The space between the concentric spheres is filled with a liquid of dielectric constant 32. Determine the capacitance of the capacitor