Solution to task 357 from Chertov´s for extramural stud

Solution to task 357 from Chertov´s for extramural stud

357. A flat capacitor consists of two round plates with radius R = 10 cm each. The distance between the plates is d = 2 mm. The capacitor is connected to a voltage source U = 80V. Determine the charge Q and the field strength E of the capacitor, if the dielectric is: a) air; b) glass.