3.0 v ... there should be only one answer to this question.
==========================
Answer #2:
If they're accidentally connected nose-to-nose or tail-to-tail,
then their combined series voltage is zero.
the voltage what can be is 3.0v
To answer this question a voltage must be stated.
Not enough information provided. You really need to check the LED light's voltage rating. If the voltage of the battery is much higher than the LED's voltage rating, it will probably get harmed.
The circuit voltage or the resistance of the individual bulb is needed to answer this question. Divide the total power (400 W) by the supply voltage.
The secondary voltage.
The whole question and answer wasn't provided. An examples is the voltage of the generator is 40V and the resistance of the first device is 12 ohms. To find the current of the first device you would divide 40V by 12 ohms and the answer would be 3.33A.
Secondary voltage.
high voltage field windings are connected in parallel
Constant voltage
under internal fault conditions , CT primary current produces steep insrease in voltage across the relay. This will exceed the burden 3kv normally designed as per. To get protected from the voltage, metrosil is connected across the relay , to drop the voltage.
all the bulbs must in parallel because all must get the same voltage.......in parallel voltage is constant.if they are connected in series they will not get same voltage
The voltage remains the same.
Plugs are based on the voltage in use and the amperage of the device that the plug is connected to. Without the voltage and amperage this question can not be answered properly.