I hate physics, I don\'t understand! Can someone explain? In order to measure th

Question

I hate physics, I don't understand! Can someone explain?

In order to measure the potential difference across a resistor, should a multimeter be connected in series or in parallel with the resistor?

How will you measure resistance to determine a rule for calculating the effective resistance of one or more resistors wired in parallel? "Well, I know that you can determine resistance with a multimeter by either using resistance mode and measuring it directly OR by connecting the resistor to a battery and then measuring the voltage and current across it [R=V/I]. I don't think that is answers the question though, in parallel."

Explanation / Answer

In order to measure the potential difference across a resistor, multimeter should be connected in parallel with the resistor. As we know that in parallel circuit the effective resistance of multimeter will negligible effect on the whole circuit resistance.

as we know that in parallel circuit equivalent resistance is

1/Req = 1/R1 + 1/R2 + 1/R3 + 1/R4 .........

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