Dr Stephen McAndrew
What are the concepts in Physics and Mathematics that students find difficult? In this blog I will post tutorial sheets that I hope will stimulate thinking and so broaden the knowledge and understanding of students allowing them to write thorough examination responses. Tutorial sheets, structured to assist student learning, will be posted on IB SL and HL Physics syllabus topics as well as the general HSC topics of relativity, electromagnetism, mechanics, thermodynamics, quantum physics and calculus. The overall purpose of these pages is to encourage and promote learning in Physics and Mathematics and so open new horizons in learning.
Below is a tutorial sheet on resistor combinations.
Five identical resistors form a bridge configuration. A current I enters the group. Find the current in the bridge resistor.
Resistances of 2Ω, 3Ω, 4Ω and 5Ω are placed clockwise around the sides of a square loop (in order from top left). Find the value of the vertical bridge resistor if no current flows through it when the configuration is connected to a 12 V battery.
Welcome to Sydney Physics Tutor, my name is Stephen McAndrew. I have taught Physics and Mathematics in independent schools in Sydney and the UK for 38 years. I offer expert individual tutoring to allow students to fulfil their academic promise. I focus on the individual student and prepare structured work to address their particular deficiencies in knowledge and skills and develop these deficiencies into strengths. I use traditional methods of instruction where students write their answers in examination style format and are tested regularly to build their confidence and so develop a love of learning in Physics and Mathematics.
STEPHEN MCANDREW
MA, MSc, PhD, DipEd, CPhys, MInstP, MAIP, MAustMS, FRAS
Sydney Physics and Mathematics Tutor
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