The gain increases.
It gets brighter.
current decreases and resistance increases
As current increases, the electromagnet strength will increase.
That will depend on the temperature coefficient of resistance of the device, which could be positive (i.e. resistance increases with increasing temperature), negative (i.e. resistance decreases with increasing temperature), or zero (i.e. resistance is unaffected by temperature changes).
The PF will increase
when a change happens, positive feedback is a response to that change that encourages the change further, instead of trying to inhibit the change like negative feedback.
It simply means that when one variable increases, the other increases as well.
During positive feedback loop, e.g. a gland activates a hormone and the hormone in turn activates the gland. After the hormone knows that it is being activated by the gland, the hormone signals the gland to produce more of the hormone. This is positive feedback loop.
It increases.
It increases.
You get a positive number which is larger than the original.
There are two kinds of feedback in the control of the body. Negative feedback occurs when a change happens in the body that makes the body beyond it's homeostatic level. Negative feedback reverses those changes and returns the body back to it's normal stage. Positive feedback occurs to temporarily amplify or enforce the change that is occurring. This process causes a number of increases until a signal is sent to the brain to stop the process.
Usually yes, but you do have to take migration, immigration into account.
what happens if we remove Rc in RC coupled amplifier
It can an example of both a +ve or a -ve feedback loop. if +ve you get more and more thirsty until something happens (ie you go get a drink and thirst no more or you die)...
wht happens if WBC increases?
The output waveform will be limited to the difference between the supply and ground (or between the positive and negative supplies). This causes distortion of the output waveform.