Maximum power transfer theorem iz related to which chapter of physics Class 12
1 answer:
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Explanation :
We know that the resistance of the wire is given by :
Where
is the resistivity
l is the length of the wire
A is the area of the wire.
Another factor on which the resistance of wire depends is temperature. It is given by :
So, it is clear that the resistance of the wire is directly proportional to the temperature. It we want to decrease the resistance of the piece, its temperature should be decreased.
So, the correct option is (3) " decreasing the wire’s temperature ".
Answer:
p = mv
v = p/m
m = p/v
Explanation:
The momentum is given by the following equation:
(1)
Where:
is the mass of the object
is the velocity of the object
If we isolate from (1):
(2)
If we isolate from (1):
(3)
As we can see equations (1), (2) and (3) show the relationships among momentum, mass, and velocity.