Not able to measure current : 6/9V dc motor, 9V battery

Other Hardware General Electronics
1

Hello everyone,

I looked for a similar problem on internet and in these threads, but (surprisingly !) I haven't found something similar.

I am trying to meausre the current of a 6/9V dc motor and it is not working... Here are the schematics of my circuit (see attached)

When I connect the battery directly to the motor, it spins. When I plug a multimeter in series, the motor doesn't spin (no reading on the multimeter). I tried this with an LED : no multimeter = LED is ON, multimeter = LED is not ON. I tried with another multimeter and it also doesn't work.

More info :
The motor is the one that came with the official arduino starter kit : http://arduino.cc/documents/datasheets/DCmotor6_9V.pdf
Battery is a standard Duracell 9v battery
Multimeter : black wire is in the COM port, red wire in 10A and switch is set at 10 A. I also tried in the mA port without success.

It can't get any simpler, I feel dumb but can anyone help me? Do I have 2 fried multimeters?

Initial.png

Problem.png

2

You can not fry the 10A range with a normal 9V battery.
Perhaps the meter was already broken.

Do you have a resistor between 0.1 ohm and 5 ohm ? You can put that in the wire and measure the voltage over the resistor.

3

Do you have a resistor between 0.1 ohm and 5 ohm ?

No I don't. Lowest resistor I have is 220 Ohms

4

Have you checked the multimeter's fuse?

5

Have you checked the multimeter's fuse?

Oops, I just checked it (I didn't know you could do that) and its resistance is 'open loop'. Gotta change that. Thanks Dlloyd
If this doesn't solve my problem I'll bump this thread