P3.1 Static and battery

Question 1

ampere (A)

Answer 1

The unit of current

Question 2

Battery

Answer 2

on or more cells

Question 3

cell (electricity)

Answer 3

a device that produces potential difference (separation of charge) from chemical reactions; what people normally call a ‘battery’

Question 4

Conventional current

Answer 4

The model where current flows from positive to negative, it is the opposite to electron flow

Question 5

coulomb (C)

Answer 5

The unit of charge

Question 6

current (electric)

Answer 6

the rate of flow of charged particles (usually electrons), charge = charge/time

Question 7

electric charge

Answer 7

a property (like mass) of a particle; it can be positive or negative 
Charge= current X time

Question 8

electric field

Answer 8

a region produced by charged particles or objects where charged particles of objects experience a force

Question 9

milliamp (mA)

Answer 9

1milliam = 1x10^-3A

Question 10

Spark

Answer 10

The breakdown of air that discharges a charged object; the heating of the air produces light and sound

Question 11

Static electricity

Answer 11

the charge that insulating objects acquire because Of the transfer of electrons

Question 12

Potential difference

Answer 12

A difference in (electrical) potential produced by the separation of charge that enable changes to do work, the energy by a charge

Question 13

resistance

Answer 13

a measure of how early it is for a current to flow

Resistance= p.d./ current