yes, voltmeter drops to zero as current increases to maximum
More than likely there is a short in your electrical circuit either between the headlights and your switch or in your Headlights fuse. Check under the bonnet near the battery for a fusebox then check for the Headlights or Headlamps fuse then check to see if the fuse has been blown (the fuse will be in a seethrough casing and the circuit will be separated). Another good tool to get for yourself is a simple voltmeter, you should be able to find a voltmeter for about 10 to 30 euros and then read the instructions. When checking for automotive circuits set your voltmeter for DC voltage then place your positive probe on one part of the circuit and your negative probe on another part and note the reading. If the reading fails to read toward normal voltage (12-14VDC) then you have identified the shortcircuit and may be able to replace the shortcircuit or inform your mechanic or dealership or agency of your problem.
Overcurrent, sometimes called shortcircuit.
No way to really know, if you think you are then you can shortcircuit the chip in your phone.
No. Voltmeter in parallel. Ammeter in series.
It is a voltmeter which can only measure direct current.
A voltmeter measures voltage in volts.
You mean fastest? Digital voltmeter gives reading in seconds.
why is extention
A voltmeter is a measuring instrument that is used in the measurement of the electric potential in volts.
positive terminal
A voltmeter is a device used to measure the voltage in an electrical circuit. An example sentence would be: She went to the hardware store to purchase a voltmeter.
An electrodynamometer can work as a voltmeter by judging the wavelength and force of the electricity, much the same at the voltmeter, then converting it to a force that is more recognizable.