A parallel plate capacitor with plate separation 5mm is charged up by a battery. It is found that on introducing a mica sheet of 2mm thick, keeping the battery connection intact, the capacitor draws 25% more charge from battery. The dielectric constant of mica is a) 2
b) 3
c) 4
d) 5​

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Arrange the images in order to show how lake-effect snow occurs.