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T6A11

ELECTRONIC AND ELECTRICAL COMPONENTS · Fixed and variable resistors; Capacitors; Inductors; Fuses; Switches; Batteries

T6A11T6A →

Which of the following battery chemistries is not rechargeable?

  1. ANickel-cadmium
  2. BCarbon-zinc
  3. CLead-acid
  4. DLithium-ion
Why Batteries split into primary (single use) and secondary (rechargeable) types. Carbon-zinc cells, the classic cheap dry cells, are primary cells: the zinc case is consumed chemically and the reaction cannot be usefully reversed, so trying to recharge them risks leaking or rupture. Nickel-cadmium, lead-acid and lithium-ion are all secondary chemistries designed for repeated charge and discharge cycles.
Watch out Nickel-cadmium tempts people because it is an older technology, but NiCd was the standard rechargeable pack in handheld radios for decades, and lead-acid is the rechargeable battery in every car.
Carbon-zinc is the throwaway flashlight cell. If it powers a car, a handheld or a laptop, it recharges.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
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The rest of T6A

  1. T6A01 What electrical component opposes the flow of current in a DC circuit?
  2. T6A02 What type of component is often used as an adjustable volume control?
  3. T6A03 What electrical parameter is controlled by a potentiometer?
  4. T6A04 What electrical component stores energy in an electric field?
  5. T6A05 What type of electrical component consists of conductive surfaces separated by an insulator?
  6. T6A06 What type of electrical component stores energy in a magnetic field?
  7. T6A07 What electrical component is typically constructed as a coil of wire?
  8. T6A08 What is the function of an SPDT switch?
  9. T6A09 What type of switch is represented by component 3 in figure T-2?
  10. T6A10 Which of the following battery chemistries is rechargeable?
  11. T6A11 Which of the following battery chemistries is not rechargeable?
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