HyperT1676
11.03.2021 •
Physics
Which of the following situations would cause the greatest decrease in the motion of molecules in a system?
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Ответ:
A
Explanation:
hindi ako sure kung tama ba yan
Ответ:
1)
2) 3.44 A
3) 27.5 V
4)
5) 46.8 A
6) 13.7 A
Explanation:
1)
Resistors are said to be connected in series if they are connected along the same branch. In this case, the total resistance of the circuit is equal to the sum of the individual resistances:
In this case, we have three resistances connected in series, so the total resistance of the circuit will be:
where:
Therefore, the total resistance is:
2)
Here we want to find the current in the circuit.
First of all, we are told that the resistance of the generator is neglected: this means that the total resistance of the circuit is that found in part 1).
Therefore, we can find the current using Ohm's Law:
where
V is the terminal voltage of the battery
R is the total resistance of the circuit
I is the current in the circuit
In this problem, we have:
V = 110 V is the voltage of the battery
So the current is
3)
The voltage drop across a certain resistor is given again by Ohm's Law:
where
In this problem:
So, the voltage drop is
4)
Electrical devices are said to be connected in parallel if they are connected along different branches having same terminal points, so that they have same potential difference across them.
The total resistance for resistors in parallel is given by:
In this problem we have 3 resistors, so the total resistance is:
where
Therefore, the total resistance is:
5)
To find the total current in the circuit, we can use again Ohm's Law:
where:
V is the terminal voltage of the battery
R is the total resistance of the circuit
I is the current in the circuit
In this problem, we have:
V = 110 V is the voltage of the battery
Therefore, solving for I, we find the current:
6)
The current across a certain resistor can be found using Ohm's Law, as before:
where:
In this problem:
Solving for I, we find the current through it: