Which is more dangerous high voltage or high current?

An electrical current at 1,000 volts is no more deadly than a current at 100 volts, but tiny changes in amperage can mean the difference between life and death when a person receives an electrical shock. Of the two, amperage is what creates the greatest risk.

Will low voltage damage electronics?

A motor that is constantly exposed to low voltage will suffer a drastic reduction of its service life. Electronic components can also suffer damage with low voltage. Even if there is no damage, a brownout can cause incorrect operation by altering the voltage pulses used in control signals.

Why are high currents dangerous?

It is electric current that burns tissue, freezes muscles, and fibrillates hearts. Hence, the danger of high voltage that can generate enough current to cause injury or death. Conversely, if a body presents higher resistance, less current will flow for any given amount of voltage.

What is relation between current and voltage?

This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r. In other words, if we increase the voltage, then the current will increase. But, if we increase the resistance, then the current will decrease.

What is the difference between high voltage and high current damage?

High voltage damage can happen in devices with high impedance by electric breakdown e.g. in dry winter seasons human often carry electric charges that can produce high voltages which can lead to damage to sensitive electronic devices. On the contrary, high current damage usually requires low impedance and usually damages devices by overheating.

What happens when voltage is too high on a dielectric material?

When the voltage across an insulator gets too high, it is possible that the insulator will stop insulating and will instead start letting some current through. This current flow can cause damage. If voltages are high enough, dielectric breakdown can result in arcing, which can cause heating, pitting, etc.

What is overvoltage and how does it affect a circuit?

As the name suggests, overvoltage is the higher supply voltage to a device than its nominal rated voltage. In short, voltage higher than the permissible voltage is known as overvoltage.

What happens when voltage is too high on a transistor?

Too high a voltage tends to cause a catastrophic breakdown of a transistor. Once you apply over-voltage stress and the transistor breaks down, the pin will show short circuit (usually to ground). If you catch it, or limit the fault current some how, this type of failure will not be visible outside of the IC.