Question

why should we prefer a high value of resistance while verifying Ohm's law in circuit

Answer 1

by prefering a high value of resistance we can only see a mjor difference in the current and voltage

HOPE IT WILL HELP YOU.....

Answer 2

Heya !
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→Why should we prefer high value of resistance while verifying Ohm's law ?

=> First let's know what is Ohm's law . So it was the scientist Sir George Simon who established a relationship between the electric current ( I ) and potential difference ( V )

According to this law , the ratio of potential difference and current is constant provided the external conditions remains the same !

=> V/ I = Constant

=> V/ I = R

=> V = I × R

↑Here , R is the Resistance of the conductor !

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=> Let's move to the Question ,

→While verifying the Ohm's law experimentally , we must prefer a high value of resistance . As clear from the law , current is inversely proportional to the Resistance .

→Thus, low resistance will give a high value of current . A large amount of current flowing in can damage the equipment . Hence, we prefer a high value of resistance in order to get a low value of current .

★Some more precautions while verifying Ohm's law ★

=> Insure that all connections are neat and tight. Loose connections give wrong readings .

=> Connect ammeter and voltmeter properly .

=> Follow all instruction and step carefully to ensure accurate readings .


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