Answer :

(i) As the question’s pattern is telling us a quantity: and it’s measuring instrument, as the quantity is potential difference: so, it’s measuring instrument will be voltmeter, and in the second case the quantity is current: so it’s measuring instrument will be ammeter.

REMEMBERING TECHNIQUE: -


The units of potential difference are volt so it’s measuring instrument is named voltmeter and the units of current is ampere so it’s measuring instrument is named ammeter.


(ii). Alternative or Non-Conventional source of energy.


EXPLANATION – As in the question’s pattern it is first giving the name of a method of source of energy and: then asking the type of method whether it is a conventional or non-conventional source of energy.


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