dev.physicslab. org/asp/nyregents/2003/January/part3.asp
Why is the answer to #47 2 amperes? How do I get that?
current entering node=current leaving node
A+3+2=4+1+2
" These sum of the currents entering a node is zero" ie, A=3+2-4-1-2=0
Thank you!
To determine why the answer to question #47 is 2 amperes and understand how to get that value, let's take a look at the link you provided. However, I am unable to directly access specific web pages. Therefore, I will explain the general method to solve such problems.
1. Read the question thoroughly: Make sure you understand what the question is asking and what information is provided.
2. Identify the concepts involved: Determine which principles or formulas are applicable to the given problem. This usually requires understanding basic electrical concepts, such as Ohm's Law (V = IR) and the relationship between current, voltage, and resistance.
3. Analyze the given information: Look for any values or variables given in the problem statement.
4. Use the formulas: Apply the appropriate formula(s) to calculate the desired quantity. In this case, since we are trying to find the current (amperes), we need to use a formula that relates current, voltage, and resistance.
5. Substitute values: Plug in the given values into the formula. Ensure that the units are consistent and that any conversions necessary are made.
6. Calculate the solution: Perform the necessary mathematical operations to find the answer. Pay attention to significant figures and units to ensure accuracy.
Without the specific details of question #47 mentioned in the link, it is not possible to explicitly explain how to arrive at the answer. However, by following these general steps and using the relevant formulas and information given in the problem itself, you should be able to obtain the solution of 2 amperes.
If you provide the specific question and its details, I can guide you through the problem-solving process and help you understand why the answer is 2 amperes in that particular case.