Yes, a variable resistor is the same as a potentiometer, or pot in short is what it's also called. Trimmer is also often used. Most volume knobs or volume sliders are similarly also potentiometers. Hope this helps!
You should use the same size resistor; a 47 kilo-ohm.CommentThe correct spelling is 'kilohm'.
On a standard four band resistor: yellow, violet, black, and gold.
The time-constant is the resistance times the capacitance, so that's 47 x 47 and because the capacitance is in microfarads, the answer is in microseconds.
is 4.7 and 47 the same
47/100 is the same as 0.47
47
50
47/5
It is a linear equation in one variable, x. And although you did not ask for it, the solution is x = 94/2 = 47
It's still 47, since you are adding and subtracting the same amount.
No
The same as 4.7 seconds.