Question

3. Separate out the devices, listed below, into categories that usually work with
(i) either batteries or mains (ii) batteries only (iii) mains only.​

Answer 1

(i) either batteries or mains: radio, computer (ii) only batteries: mobile phone, calculator, transistor (iii) only mains: electric kettle, iron press, toaster, washing machine, microwave oven

1- Either batteries or mains- Radios and transistors, Laptop computers, desktops

2- Batteries only- Mobile phones, toys, calculators

3- Mains only- refrigerators, washing machines, electric kettles, etc

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Answer 2

Answer:

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