Electric charge can accumulate on an airplane in flight. You may have observed needle-shaped metal extensions on the wing tips and tail of an airplane. Their purpose is to allow charge to leak off before much of it accumulates. The electric field around the needle is much larger than the field around the body of the airplane and can become large enough to produce dielectric breakdown of the air, discharging the airplane. To model this process, assume that two charged spherical conductors are connected by a long conducting wire and a charge of 70.0 μC is placed on the combination. One sphere, representing the body of the airplane, has a radius of 6.00 m, and the other, representing the tip of the needle, has radius of 2.00 cm. (a) What is the electric potential of each sphere? r = 6.00 m: V V r = 2.00 cm: (b) What is the electric field at the surface of each sphere? r = 6.00 m: V/m O V/m O r = 2.00 cm: magnitude direction magnitude direction ---Select--- ---Select---

Show transcribed image text An electric field is given by Ex = 3.5x^3 kN/C. Find the potential difference between the points on the x axis at x = 1 m and x = 4 m. kV Find the maximum surface charge density sigma max that can exist on the surface of any conductor before dielectric breakdown of a gas with a dielectric strength of 3.95 MV/m occurs. C/m^2

A Geiger-Mueller tube is a radiation detector that consists of a closed, hollow, metal cylinder (the cathode) of inner radius ra and a coaxial cylindrical wire (the anode) of radius (see figure below) with a gas filling the space between the electrodes. Assume that the internal diameter of a Geiger-Mueller tube is 1.95 cm and that the wire along the axis has a diameter of 0.190 mm. The dielectric strength of the gas between the central wire and the cylinder is 1.25 x 106 V/m. Use the equation ain 2πrle= to calculate the maximum potential difference that can be applied between the wire and the cylinder before breakdown occurs in the gas. €0 Anode Cathode 148 X Your response differs from the correct answer by more than 10%. Double check your calculations. V Need Help? Read It

An air-filled capacitor is charged, and then a dielectric is inserted. As a result, there is an induced charge on the dielectric. What is the difference between induced charge and free charge? Option 1: Induced charge is the charge that resides on the surface of the dielectric, while free charge is the charge that is free to move within the dielectric. Option 2: Induced charge is the charge that is created by the electric field of the capacitor, while free charge is the charge that is already present in the dielectric. Option 3: Induced charge is the charge that is attracted to the oppositely charged plates of the capacitor, while free charge is the charge that is repelled by the plates. Option 4: There is no difference between induced charge and free charge.

Two identical balls each having a density pare suspended from a common point by two insulating strings of equal length. Both the balls have equal mass and charge. In equilibrium, each string makes an angle with the vertical. Now, both the balls are immersed in a liquid. As a result, the angle does not change. The density of liquid is o. Find the dielectric constant of the liquid.

I need help for these questions, I am studying for the physics exam and I couldn't solve this questions which are in the study plan of physics-102. Thanks in advance.