Sharp EL-9900 manual Print WATT=, Print Z Wait Xmin End Ymin Draw N M sin W

EL-9900 Graphing Calculator

Electric Power Consumed on an AC Circuit

Enter the voltage effective value, frequency and resistance value to find the power value of the circuit with resistance R. Draw a graph of the changes in power over a period of time.

Calculation
P : power consumption	I : effective value of current
V : effective value of voltage
I0 = N • sin ω • t V0 = M • sin ω	• t P0 = l0 • V0		R	I
P0 : change in amount of power with time
I0 : change in amount of current with time
V0: change in amount of voltage with time
N: maximum value of current	M: maximum value of voltage		V
ω : angular velocity (2 π S)	t : time	S : frequency

FLOWCHART

PROGRAMME LIST(REAL MODE)

Title : AC POWER

Start

Data entry

Calculation of power

Calculation of range

Display of power

Display of graph

Enter data (resistance, voltage and frequency).

Power calculated. W = angular velocity M = maximum voltage N = maximum current

I = effective value of current Z = power

Range for graph calculated.

Xmax, Xscl, Ymax, Yscl

Power displayed. (value of Z)

Function: Y = N M (sin (W X))2

Rad

Print "Input RESISTANCE

Input R

Print "Input VOLTAGE

Input V

Print "Input FREQUENCY

Input F

R		T
V	D
F	π	S
2		S		W
D	√	2	M
M/T			N
N/√		2	I
D I			Z
1/S			Xmax
Xmax/10				Xscl
N M			Ymax
Ymax/10				Yscl
Print "WATT=
Print Z
Wait
0	Xmin

End

0 Ymin

Draw N M (sin (W X))2

End

PARAMETERS

Name of parameter	Content	Name of parameter	Content
S	frequency	Xscl	scale of x-axis
I	effective value of current	Ymax	maximum value of y-axis
T	resistance value	Yscl	scale of y-axis
D	effective value of voltage	V	input of voltage
W	angular velocity	R	input of resistance value
N	maximum value of current	F	input of frequency
M	maximum value of voltage	Z	value of power
Xmax	maximum value of x-axis

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