im confused now; will the voltage difference between drain and gate influence when the lamp lights? and due to parallel configurations, is the voltage across the resistor the sum of the lamp and the drain-gate voltage difference?
I think the current all goes into the resistor... at least i think i can make that assumption.
Now this is my solution; the potential at the gate is 6 - IR where I = photocurrent.
as I gets larger (more light) the potential grows smaller. but, if it starts to get dark, the current drops. We...
Homework Statement
Firstly, this is more of a schoolwork issue, not coursework or a set task. It is more to do with understanding the circuit seen in the image provided:
I am trying to understand why this circuit does what it is supposed to; activate the lamp when a certain light intensity is...
Hello all,
i have been asked a question about a lump of iron being warmed, and to calculate the difference between enthalpy and internal energy. I did some algebra and found that the change in the product pV , in the case of a liquid would suffice. But, since the volume doesn't change (Assumed...
Homework Statement
given the circuit shown, find V1.
Homework EquationsThe Attempt at a Solution
see image:
am i right? Video says otherwise... I chose to use the superposition theorem here.
help appreciated,
regards,
james.
thank you for clarifying- i do have one other question though,
when you say there could be a wire between the terminals, why does that imply the V out would be zero?
hello,
i have a question regarding the way we represent information on circuit diagrams.
The first is to do with representing output voltages:
is V out always simply representing the voltage of whatever lies between/trapped between those two horizontal lines? Also, i see a lot of diagrams...
apologies for the typo, i want to find the ratio of volumes between 2 vessels. I can see the pressure and temperature, but they are effectively behind a wall and i can control pressure input and output only.
i can measure the temperature of the vessels and their pressures. I can also increase...
Homework Statement
I have been tasked with designing a feasible experiment to determine the ration between 2 vessels. I think i have a way that works on paper.
Homework Equations
pV = nRT and the conservation of mass.
The Attempt at a Solution
1.Start with 2 vessels of unknown volume x and y...
my way of justifying the idea that each degree of freedom corresponds to 0.5R of the energy is that we assume that the gas is isotropic, hence the contributions from each dimension are equally weighted.
ok, i did some research;
for a monatomic gas the molecules only have 3 degrees of freedom corresponding to translational kinetic energy in 3 dimensions. But for a diatomic gas, there are 5- 2 extra degrees of rotational freedom. Am i right in assuming that air is a composition of diatomic...
Homework Statement
A rigid vessel contains 0.1kg of air initially at 1bar and 20degC. A heat transfer to the gas
increases the temperature to 1000degC. What type of process does the gas undergo ? Calculate
(i) the initial and final volume of the air
(ii) the final pressure
(iii) the change in...