Q10 of 46 Page 269

Complete the table choosing the right terms within the brackets.

(zinc, copper, carbon, lead, lead dioxide, aluminum.)


This is the complete table and the answers are in the third column.

These are the answers because, the lead acid battery or accumulator has positive electrode of lead dioxide and leclanche cell has negative electrode of zinc, so we just need to look out for the patterns of questions to solve them.


More from this chapter

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8

Fuse wire is made up of an alloy of ___________ which has high resistance and_______.

 9

Observe the circuit given and find the resistance across AB.

 11

How many electrons flow through an electric bulb every second, if the current that passes through the bulb is 1.6 A.

 12

Vani’s hair dryer has a resistance of 50 Ω when it is first turned on.

i) How much current does the hair dryer draw from the 230 V – line in Vani’s house?


ii) What happens to the resistance of the hair dryer when it runs for a long time?


(Hint: As the temperature increases the resistance of the metallic conductor increases.)