KYORITSU KEW 1109 - Page 6

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4
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Voltage Measurements Current Measurements
(Parallel Connection) (Series Connection)
Measuring voltage at both ends
of a resistor.
M e a s u r i n g c u r r e n t b e i n g
consumed by a resistor.
I
M
.......... Meter Current
I
R
.......... Load Current
E .......... Power Source Voltage
R
M
........ Internal Resistance of Multimeter
Fig. 1
I
R
+I
M 
I
R
> > I
M
↓ ↓
R
M
・I
R
< < E
R
M
・I
R
I
M
I
R
I
R
Power
Source
Power
Source
E E
Load Load
R
M
= ∞
DC.V Range DC.mA Range
＋
＋
−COM
−COM
＋
−
−
R
M
= 0
V
mA
mA
Battery
(Power
Source)
Battery
(Power
Source)
Battery
(Power
Source)
Battery
(Power
Source)
Resistor
(Load)
Resistor
(Load)