Magna Concursos
2656281 Ano: 2008
Disciplina: Inglês (Língua Inglesa)
Banca: CESPE / CEBRASPE
Orgão: INPE

Capacitors may retain a charge long after power is removed from a circuit; this charge can cause shocks or damage to connected equipment. For example, even a seemingly innocuous device such as a disposable camera flash unit powered by a 1.5 volt AA battery contains a capacitor which may be charged to over 300 volts. This is easily capable of delivering a shock. Service procedures for electronic devices usually include instructions to discharge large or high-voltage capacitors. Capacitors may also have built-in discharge resistors to dissipate stored energy to a safe level within a few seconds after power is removed. High-voltage capacitors are stored with the terminals shorted, as protection from potentially dangerous voltages due to dielectric absorption.

Internet: <en.wikipedia.org> (adapted).

Based on the text above, judge the following item.

A replaceable camera flash unit is not capable of retaining more than 300 volts when charged by a 1.5 volt AA battery.

 

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