The figure shows a circuit diagram with a resistor (R) connected to a power supp

Question

The figure shows a circuit diagram with a resistor (R) connected to a power supply with adjustable voltage (battery symbol with arrow); the numbered circles indicate probes.

For a measurement of the current through the resistor and the voltage across the resistor,

Question 1 options:

-Probe 1 is an ammeter and probe 2 is a voltmeter.

-Probe 1 is a voltmeter and probe 2 is an ammeter

-Probe 1 and 2 are voltmeters.

-Two options will work: probe 1 as an ammeter and probe 2 as a voltmeter, or

probe 2 as an ammeter and probe 1 as a voltmeter.

-Probe 1 is an ammeter and probe 2 is a voltmeter.

-Probe 1 is a voltmeter and probe 2 is an ammeter

-Probe 1 and 2 are voltmeters.

-Two options will work: probe 1 as an ammeter and probe 2 as a voltmeter, or

probe 2 as an ammeter and probe 1 as a voltmeter.

Explanation / Answer

We know that for any number of circuit elements have the same potential difference for the parallel combination. So from the figure, probe 2 should be Voltmeter.

And probe 1 is Ammeter. Along sereis combination only we have the same current.

(note: Voltmeter has very high restance and ammeter has very low restance)

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