A cathedral has a large,circular stained glass window. A visitor measures the window and calculates that it has a circumference
1 answer:
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Answer:
<h2>B. 3,4 Volt</h2>Step-by-step explanation:
Here we need to use Ohm's Law, because we have electric current, voltage and resistances. This law state:
So, first we need to calculate the total resistance to then find the voltage. The resistances can be placed in two ways: in parallel, in series.
The pair 4 and 8 ohms are parallel, so we solve:
Which is,
Now, this total resistance of parallels ones is placed in series with the 3 ohm resistance, in this case we just sum, because they are in series:
Now that we have the total resistance of the circuit, we use the Ohm's Law:
Therefore, the right answer is B.
