Electronics - Voltage and Current - Discussion
Discussion Forum : Voltage and Current - General Questions (Q.No. 45)
45.
A secondary cell generates dc via chemical activity; a primary cell generates dc:
Discussion:
18 comments Page 1 of 2.
Zahra said:
1 decade ago
Can someone explain please.
Anand said:
1 decade ago
Primary batteries can be used once because the chemical reactions that supply electrical current are Irreversible. In secondary batteries that the chemical reaction that supply electrical current are readily reversed. So in both batteries chemical reaction only takes place to generate dc.
Maya said:
1 decade ago
What is dc?
Ali Umar said:
1 decade ago
DC: Direct current which is supplied from batteries not from transformer. The graph of DC is totally straight but in AC(Alternating current) is sinusoidal which is supplied from transformer.
Anusha said:
1 decade ago
What is the chemical activity that takes place and the diff between the chemical activity taking place in primary cell and secondary cell. Can anyone explain me this?
Aneeja said:
1 decade ago
It's not about the chemical activity that differs primary cell and secondary.
The chemical reactions in secondary can be reversible, so charging and discharging both are possible.
In primary reactions can't be reversible, so only discharging possible.
The chemical reactions in secondary can be reversible, so charging and discharging both are possible.
In primary reactions can't be reversible, so only discharging possible.
Vids said:
1 decade ago
What is transformer?
Kameshwar said:
1 decade ago
Transformer is a device that convert AC to DC.
Visveswaran said:
1 decade ago
I won't agree with @Kameshwar answer.
Actually transformer is device which converts AC to AC.
Conversion of AC to DC by using rectifier.
Actually transformer is device which converts AC to AC.
Conversion of AC to DC by using rectifier.
(1)
Vijender said:
1 decade ago
Actually transformer is a device which is used to step up and step down the voltage bcs we need only 220 volt for home issues or appliances. So to convert high voltage to low voltage we simply use transformer.
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