The current will depend on external resistance - far better to consider total energy, conversion efficiency, or failing that, voltage. The answer will depend on device size anyway.
A 1cm3 cube of quartz with 2KN of force (449.6178862lbf) of correctly applied force can produce a voltage of 12,500V (12.5kv)
It depends on the turns ratio of the transformer.
12
A Germanium diode has a much lower breakdown voltage than a silicone diode.
It is the 'as if' voltage in an AC circuit. Referred to as Vrms 120 volts in your house is Vrms, the effective voltage, 'as if' it were DC 120V, can do the same work. But 120VACrms is a sine wave with a peak voltage much higher than 120 volts.
The voltage output of a cattle prod is typically around 4,500 to 5,000 volts although it can be much lower and much higher. Tasers typically have a voltage around 50,000 volts but once skin contact is made the voltage drops to around 1,200 volts. The power of cattle prods and tasers is more dependent on the amps delivered than the actual voltage.
this is not how they are made naturally but how they are made for diagnostic uses: ultrasound waves are made by applying a current that is similar to the natural frequency of the piezoelectric quartz crystal, when this is applied to the crystal they produce ultrasonic waves! ADDED: As a point of detail, quartz is rarely if ever used now, replaced by much more sensitive, artificial, piezoelectric ceramics.
There is voltage in strawberries. The voltage makes them have electricity if it didnt maybe not has much flavor.
13.5 to 15.5 volts.
4.5v
12 voltage
An apple produces about 5 volts.
Less than 5 volts
Approximately .5-1.0 volts
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A much shorter cord can produce extra voltage. Apparently its the lack of voltage from wd passport to the playstation that's the issue
You can use a piezoelectric device. Piezoelectric devices are commonly used to convert back and forth between mechanical and electrical energy. Examples include cheap electrical buzzers and cigarette lighters (those that create a spark to light the butane). To efficiently use a piezoelectric device you must devise an acoustic amplifier to increase the pressure on the surface of the piezoelectric as much as possible, and then efficiently store the piezoelectric power via diodes (and other marvelous circuit elements) into a capacitor.
Voltage is potential measured by amount of charge or free electrons available to do work. Your voice can generate a pressure wave that can move a diaphragm in a microphone and produce a small voltage which can then be amplified. The type of transducer will determine the voltage which is typically in the millivolt range.