IB DP Physics: SL复习笔记5.4.1 Magnetic Fields
Magnetic Fields Magnetic Field Definition A magnetic field is a field of force that is created either by: Moving electric charge Permanent magnets Permanent magnets are materials that produce a mag...
IB DP Physics: SL复习笔记5.3.4 Electromotive Force & Internal Resistance
Electromotive Force When charge passes through a power supply such as a battery, it gains electrical energy The electromotive force (e.m.f) is the amount of chemical energy converted to electrical ...
IB DP Physics: SL复习笔记5.3.3 Terminal Potential Difference
Terminal Potential Difference Defining Potential Difference A cell makes one end of the circuit positive and the other negative. This sets up a potential difference V across the circuit The potenti...
IB DP Physics: SL复习笔记5.3.2 Investigating Electric Cells
Investigating Electric Cells Zinc-carbon cells Zinc-carbon cells are the most common type of primary cells, consisting of a zinc casing which acts as the negative electrode a paste of ammonium chlo...
IB DP Physics: SL复习笔记5.3.1 Primary & Secondary Cells
Primary & Secondary Cells Simple Cells A simple cell is a source of electrical energy The simplest design consists of two electrodes made from metals of different reactivity immersed in an elec...
IB DP Physics: SL复习笔记5.2.9 Potential Divider Circuits
Potential Divider Circuits When two resistors are connected in series, through Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential dividers ar...
IB DP Physics: SL复习笔记5.2.8 Heating Effect of Current
Heating Effect of Current When electricity passes through a component, such as a resistor, some of the electrical energy is turned into heat, therefore, increasing its temperature The heat that is ...
IB DP Physics: SL复习笔记5.2.7 Series & Parallel Circuits
Series & Parallel Circuits The following statements for series and parallel circuits are a consequence of Kirchhoff's first and second law In a series circuit: The current is the same at any po...
IB DP Physics: SL复习笔记5.2.6 Investigating Resistivity
Investigating Resistivity Aims of the Experiment The aim of the experiment is to determine the resistivity of a 2 metre constantan wire Variables: Independent variable = Length, L, of the wire (m) ...
