That's the question.
I have done an experiment.
The voltage of a free DC power supply was set to 5V. When it was connected to a circuit, its voltage dropped to 3V. What happened?
Isn't the 2V is lost in the internal resistance of the power supply.
However,the power supply will...
I think it will be easier for the readers to read my question by using flow chart.I apologized for my poor english because I usually weak in expressing my point of view in English.I used to write in Chinese.Really sorry.Sorry for all the readers.Sorry for my distrubance.
In these two cases , emf will be induced in different way.
for motor: current +B-field-->Force-->Coil rotate-->change of magnetic flux-->emf inducedd in the coil
for inductor , when the switch suddenly openfrom closes switch, there are a sudden change of magnetic flux ,there emf will be...
I want to ask if I have 2 cylinder container
1) 50 m3
2) 60 m3
If I inject the same no. of mole of gases into these containers respectively
when I apply PV=nRT
Is the volume in calculating the gases in these containers are the same??
Since I carry out a microscale experiment , So I need to use "DROPS".
So the total volume should kept constant because I can accurately measure the densisities of cpds? But I am not fully understand it
The experiment that I carried out is to find the relationship between conc. of reactant and...
I am currently doing an experiment.
The experiment is to investigate the dependence of reaction rate on conc. for the reaction between sodum thiosulphate reacts with dilute acids
By varying concentrations of thiosulphate and H+ respectively in 2 experiments.We can easily find that speed of...
In an LR circuit with alternating current , it is know that the inductance of the cable is of the order 10^-7 . With a 2 ohm resistor ,the circuit is used to measure inductance.There are 2 frequencies , 100kHZ and 1M Hz,that can be chosen for the measurement .
So whyI MHz is better . I know...
Assume there is a capacitor and resistance connecting in series in a.c. Now channel 1 of the CRO acroos both the capaciotr and resistor and channel 2 across the resistor.The trace on channel 1 was taken as the p.d. across the capacitor and that on channel 2 as the current through the capacitor...