Answer:

Explanation:
We are given that three resistors R1, R2 and R3 are connected in series.
Let
Potential difference across 
Potential difference across 
Potential difference across 
We know that in series combination
Potential difference ,
Using the formula

Hence, this is required expression for potential difference.
Answer:
I don't know answer. ssza
Answer:
lose, higher
Explanation:
An aircraft lose altitude when flying from a region of higher temperature to a region of cooler temperature, hence making the reading on the altimeter to be high.
Answer:
I can't see the unit test you are talking about