Please answer this question ASAP...

Dear Student,
Here, reading in voltmeter (V) = 2V 
      And reading in ammeter (I) = 0.4 A

We know that,

R = V/I
R = 2/0.4
R = 5 Ω


The law applicable here is the Ohm’s law.

Ohm’s law states that the current flowing through a conductor is directly proportional to the potential difference across the conductor. The proportionality constant is the resistance of the conductor, it is a constant for a known temperature range.


The graph obtained is a straight line with positive slope.

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