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  • (a) In a given ammeter, a student saw that needle indicates 12th division in ammeter while performing an experiment to verify Ohm’s law. If ammeter has 10 divisions between <img alt="0" src="https://entrancecorner.codecogs.com/gif.latex?0"

(a) In a given ammeter, a student saw that needle indicates 12th division in ammeter while performing an experiment to verify
Ohm’s law. If ammeter has 10 divisions between 0 to 0.5\; A, then what is the ammeter reading corresponding to 12th division ?

(b) How do you connect an ammeter and a voltmeter in an electric circuit ?

 

 

 

 
 
 
 
 

Answers (2)

(a) An ammeter has 10 divisions between 0 to 0.5\; A

    So, reading of one division =\frac{0.5}{10}A

           reading of 12 division =12\times \frac{0.5}{10}A

                                               =\frac{12\times 5}{100}=\frac{60}{100}=0.6\; A

(b) An ammeter has low resistance and it is used to measure the current in a circuit. So, it is always connected in series in an electrical circuit.

    An voltmeter has high resistance and used to measure voltage across two points so, it is always connected in parallel with the circuit.

Posted by

Sumit Saini

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(a)   Reading of 1 division=0.5/10A

Reading of 12 division=12×0.5/10A

=12×5/100

=60/100

=0.6Amphere

 

Posted by

Sanika jadon

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