Can someone please explain this? Thank you! The voltage drop on a carbon resisto

Question

Can someone please explain this? Thank you!

The voltage drop on a carbon resistor is measured to be 2.5 Volt and the current flowing in the circuit is 200mA. What is the resistance of this carbon resistor? 12.5 ohm 0.0125 ohm 80 ohm 0.08 ohm Figure 1 shows the circuit diagram for the ohm's law experiment. Two multimeter are employed to determine current and potential difference for resistor R. Which of the following is true? 1: ammeter; 2: voltmeter 1: ammeter; 2: ammeter 1; voltmeter; 2: ammeter 1: voltmeter; 2: voltmeter

Explanation / Answer

option C is correct.

ammeter are always connected in series with resistance so that we can calculate the current passing through it and voltmeter is always connected in parallel across resiatance to find potential drop of that resistance.

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