Kirchhoff’s Laws can be used to analyse the voltages and
currents flowing through parts of a circuit like the one shown in
the picture.
Part of the circuit is illustrated here – which includes two
voltage sources and three resistors.
When Kirchhoff’s Laws are applied the currents are as follows:
10 V = 7I1
+ 8 (I1
+ I2)
20 V = 2I2
+ 8(I1
+ I2)
Solve the equations by re-writing them as linear simultaneous equations, to find the values of currents I1 and I2
Look at the roller coaster in the picture.
On a straight downhill descent with constant acceleration, a
ms-2, the
distance travelled is given by the equation:
s = ut + ½ at2
Where s is distance
travelled, u is initial
velocity, t is time and a
is acceleration.
If:
distance s = 24m at t = 2s,
and
distance s = 88m at t = 4s
Determine, using linear simultaneous equations:
Initial acceleration (in ms-2)
Initial velocity (in ms-1)
Distance travelled after 5 seconds
Version 1
3 GOD’S MATHEMATICS OUR WEAKNESS X GOD STRENGTH
50 IDEAS FOR AFL IN MATHEMATICS 1 LIST THREE
6 FACTORS THAT HINDER OPPORTUNITIES TO LEARN MATHEMATICS IN
Tags: engineering ===================================, to engineering, mathematics, engineering, understand