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Bookmark or Share- How much voltage/current is "dangerous"? - Electrical Engineering Stack ...Likewise, if the current and voltage are below a certain level, a person can--given enough time--safely absorb an arbitrarily large amount of electrical energy. Further, if voltage is sufficiently low, the amount of current that can flow as a consequence of such voltage will be too low to cause harm. \$\endgroup\$ –
- voltage - Is power proportional to V or V^2? - Electrical Engineering ...If the resistance is constant, then increasing the voltage increases the current proportionally, exactly proportionally in the ideal case. Power is not proportional to voltage squared in cases where the load is not a constant resistance. For example, with a rectifier diode it will increase considerably faster than voltage squared.
- How are current and voltage related to torque and speed of a brushless ...A DC motor can be approximated as a circuit with a resistor, and voltage back-emf source. The resistor models the intrinsic resistance of the motor windings. The back-emf models the voltage generated by the moving electric current in the magnetic field (basically a DC electric motor can function as a generator).
- What is "forward" and "reverse" voltage when working with diodes?The reverse voltage is the voltage drop across the diode if the voltage at the cathode is more positive than the voltage at the anode (if you connect + to the cathode). This is usually much higher than the forward voltage. As with forward voltage, a current will flow if the connected voltage exceeds this value. This is called a "breakdown".
- voltage - Why does USB have Vcc=5V and high=3.3V? - Electrical ...The higher voltage allows compensation for voltage drop to the device. If USB was 3.3v then if you had a long cable and poor connectors with 0.5v of drop then the device will only run at 2.8v. If the voltage is 5v the you still have 4.5v to work with and that is enough to run an LDO voltage regulator.
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