Assuming that there are two bulbs in series (or in parallel), one is brighter than the other, then their actual electric power, rated power, actual voltage, rated voltage What is the relationship between actual current, rated current, actual power at the same time and rated power Please give the best explanation of the pushing process

Assuming that there are two bulbs in series (or in parallel), one is brighter than the other, then their actual electric power, rated power, actual voltage, rated voltage What is the relationship between actual current, rated current, actual power at the same time and rated power Please give the best explanation of the pushing process

First of all, light and dark can only show the size of the power, light power
Light bulb
Parallel connection: high actual power
The actual voltage is the same
The actual current is high
As for all kinds of rating, it depends on the bulb itself. At the same time, the comparison should be electric power. Of course, the actual electric power is bright
The actual power in series is high
The actual voltage is high
The actual current is the same (w = UI)
The others are the same as parallel connection
Ask again if you don't understand

The students of an experimental group measured the electric power of the small light bulb by "voltammetry". The rated voltage of the small light bulb to be measured is 3.8V, and the rated power of the small light bulb is estimated to be 0

1. In the process of connecting the circuit, the switch should be opened; before closing the switch, the slide is not adjusted to the maximum resistance
2. If P = UI = U2 / R, r = U2 / P = (3.8V) 2 / 1W = 14 Ω

The purpose of measuring three sets of data in the experiment of measuring the electric power of small light bulb is to

In the experiment of measuring the electric power of small bulb, the purpose of measuring three groups of data is to find out the law that the resistance of filament increases with the increase of temperature, not to find the average value to reduce the error

In the experiment of "measuring the electric power of a small light bulb", a student connected the circuit correctly,
In the experiment of "measuring the electric power of a small bulb", a student connected the correct circuit, closed the switch, and the small bulb glowed. However, no matter how to adjust the sliding rheostat, the voltmeter's indication changed, but it could not reach the rated voltage of the bulb. Why (explain why)
(to say why). At least 10 points

If the voltage at both ends of the bulb is lower than the rated voltage, it is because the power supply voltage you choose is too low; if the voltage at both ends of the bulb is always higher than the rated voltage, it is because the resistance of the sliding rheostat is too small
There are only two reasons