Answer:
See attachment
Step-by-step explanation:
:) Brainliest?
Answer:
x = sqrt 2, y = 2
Step-by-step explanation:
45-45-90 triangles have a ratio of 1 : 1 : sqrt2
Answer:
The 1,3,and 4.
Step-by-step explanation:
Thousandths....if u mean the place value of the 1
Answer:
C) 80 milliamperes
Step-by-step explanation:
The amount of current flowing through a circuit is directly proportional to the amount of voltage applied across the circuit. The relation between current(I) and voltage(V) can be expressed as:
![I \propto V\\\\I = \frac{1}{R}V](https://tex.z-dn.net/?f=I%20%5Cpropto%20V%5C%5C%5C%5CI%20%3D%20%5Cfrac%7B1%7D%7BR%7DV)
Here,
is the proportionality constant. It is given that, when voltage is 2 volts, 40 milliamperes(
amperes) current flow through the circuit. Using these values we can find the value of proportionality constant. i.e.
![40 \times 10^{-3}=\frac{1}{R} \times 2\\\\ \frac{1}{R}=20 \times 10^{-3}](https://tex.z-dn.net/?f=40%20%5Ctimes%2010%5E%7B-3%7D%3D%5Cfrac%7B1%7D%7BR%7D%20%5Ctimes%202%5C%5C%5C%5C%20%5Cfrac%7B1%7D%7BR%7D%3D20%20%5Ctimes%2010%5E%7B-3%7D)
Using this value, we can establish the relation between I and V as:
![I = 20 \times 10^{-3} \times V](https://tex.z-dn.net/?f=I%20%3D%2020%20%5Ctimes%2010%5E%7B-3%7D%20%5Ctimes%20V)
Now, we need to calculate value current (I) if voltage is equal to 4 volts. Substituting V = 4 in above equation, we get:
![I = 20 \times 10^{-3} \times 4\\\\ I = 80 \times 10^{-3}](https://tex.z-dn.net/?f=I%20%3D%2020%20%5Ctimes%2010%5E%7B-3%7D%20%5Ctimes%204%5C%5C%5C%5C%20I%20%3D%2080%20%5Ctimes%2010%5E%7B-3%7D)
Thus, the value of current will be 80 milliamperes