Charge and current

Question 1

define electric current

Answer 1

the rate of the flow of charge
charge is measured in couloumbs
time is measured in seconds

Question 2

what is the elementary charge?

Answer 2

±1.60 x 10^-19C = e
proton = +e
electron = -e

Question 3

what is charge?

Answer 3

property of matter that causes it to experience an electrical force

Question 4

what is an electrolyte and how does current form from it

Answer 4

an electrolyte, is a fluid that can conduct electrical current. the positive ions move to the cathode and the negative ions move to the anode. when the positive ions reach the cathode, they receive electrons. when the negative ions reach the anode, they donate electrons. so electrons can flow through the metal part of the circuit.

Question 5

what direction is conventional current and flow of electrons

Answer 5

conventional current is from the positive terminal to the negative terminal
the flow of electrons is from the negative terminal to the positive terminal

Question 6

what is the structure of a metal thought as and what is the nature of ions and electrons

Answer 6

the structure of a metal may be thought as a regular crystal structure or lattice of positive ions, surrounded by number of free electrons. the positive ions are not free to move, but they vibrate and fixed points - higher temperature will cause them to vibrate more vigorously.

Question 7

whats a way to make electrons move

Answer 7

make one end of a wire negative and the other end positive. the electrons in the wire will be attracted to the positive end, so they will move through the wire as current

Question 8

define a coulomb

Answer 8

A coulomb is the charge transferred by a current of one ampere in one second.