FEF122 - Physics 2 – LAB
Report 3 - Questions
Q1) For questions a-c, please refer to the circuit below.
a) What is the total resistance of the circuit?
b) What is the total current leaving the battery?
c) What is the current through the 45 ohm resistor?
Q3) In an experiment, current through a resistor R and potential difference on the R were measured. The
obtained measurements were shown in the table below. Answer the questions with using given equation and
graphics.
a) What quantitiy should be on the x –axis? Write the name and unit of it on the graph.
b) What quantitiy should be on the y –axis? Write the name and unit of it on the graph.
c) (according to the equation obtained for the chart) with A = 18  what is unit of A?
d) According to the given graph, (approximately) maximum how much ampere can flow through this
resistance?
e) Does this resistor obey the Ohm’s Law? Explain your answer.
I (A)
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
1,1
1,2
1,3
V (volt)
0,2
0,9
2
3,5
5,4
7,7
10,4
13,5
17
20,9
25,2
29,9
35
30
y = 18x2
25
20
15
10
5
0
0
0,5
1
Q3) Draw a) ac ampermeter b) dc voltmeter, c) dc ampermeter e) ohmeter on the Picture.
1
1,5
(+)
(-)
Q4) Convert the given units each other correctly.
a) 0,002 A = ______________ mA = _______________mikroA
b) 500 kohm = _______________ ohm= ___________Mohm
c) 250.000 Volt = _________________MVolt
d) 250 Hz = _______________ ms (mili second)
e) e) T=10 ms (mili second)  f =_________________ Hz
2