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Chapter 12: Problem 1743

Which of the following set up can be used to verify the ohm's law?

Short Answer

Expert verified
Setup A, which has a variable voltage source connected to a variable resistor, with an ammeter connected in series and a voltmeter connected in parallel with the resistor, is the most suitable setup to verify Ohm's Law as it allows us to manipulate and measure voltage, current, and resistance easily.

Step by step solution

01

Identify the components needed in the setup

To verify Ohm's Law, the setup should have the following components: - A variable voltage source - A resistor - An ammeter (to measure the current) - A voltmeter (to measure the voltage)
02

Analyze the following setup

Setup A: A variable voltage source is connected to a variable resistor. An ammeter is connected in series with the resistor and a voltmeter is connected in parallel with the resistor. This setup has all the necessary components to verify Ohm's Law. By adjusting the variable voltage source and the variable resistor, we can measure the corresponding current through the ammeter and the voltage across the resistor using the voltmeter. Verdict: This setup can be used to verify Ohm's Law. Setup B: A fixed voltage source is connected to a variable resistor. An ammeter is connected in series with the resistor and a voltmeter is connected in parallel with the resistor. This setup also has all the components needed to verify Ohm's Law. However, since the voltage source is fixed, we are limited to verifying Ohm's Law at only one voltage value for various resistance values. Verdict: This setup can partially verify Ohm's Law, but it's less versatile than Setup A. Setup C: A variable voltage source is connected to a fixed resistor. An ammeter is connected in series with the resistor and a voltmeter is connected in parallel with the resistor. This setup has all the components needed to verify Ohm's Law. We can vary the voltage across the fixed resistor and measure the corresponding current through the ammeter. However, since the resistor is fixed, we cannot experiment with different resistance values. Verdict: This setup can verify Ohm's Law, but it's less versatile than Setup A.
03

Conclusion

Based on the analysis of different setups, Setup A is the most suitable for verifying Ohm's Law as it allows us to manipulate and measure voltage, current, and resistance easily. Setup B and Setup C can also partially verify Ohm's Law but are less versatile as one of the variables (voltage or resistance) is fixed in each case.

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