What determines the strength of an electric shock?

What determines the strength of an electric shock?

The magnitude of an electric shock depends on the strength of the current, which in turn depends on the voltage and the ohmic resistance of the body. The resistance of the human body varies in different persons and is primarily dependent on the resistance of the skin.

How do you resist an electric shock?

Protect Yourself With GFCIs. If you’re doing work that uses electricity—that is, with the power on—plug your extension cord, power tool, or other equipment into a GFCI (ground-fault circuit-interrupter) outlet, or use a GFCI-protected extension cord.

Why is electricity dangerous to the human body?

Electric current in the human body is dangerous for two primary reasons. First, it disrupts the normal operation of your nervous and muscular systems, causing severe muscle contractions. Second, just like in the light bulb, when current passes through your body, it’s transformed into thermal energy.

How much resistance is in a human body?

The “total body resistance” of the person is composed of the very low (approximately 300 Ω) internal body resistance plus the 2 skin contact resistances. The skin contact resistance will usually be between 1000 and 100,000 Ω, depending on contact area, moisture, condition of the skin, and other factors.

What practical implication does an understanding of the low resistance within a human body have to a safety professional?

What practical implication does an understanding of the low resistance within a human body have to a safety professional? The effects of electricity on the human body depend on many variables. *If the extensor muscles are excited by the electric shock, the person may be thrown away from the circuit.

What is the resistance of a human body?

What is average resistance of human body?

Human resistance is about 10,000 ohms on the high side and as little as 1,000 ohms if the person is wet. Remember, ohms is the unit of measure of a material’s resistance or impedance to current flow.

Which part of the human body has the highest resistance?

The skin
Which part of the human body offers the most electrical resistance? The skin offers the most electrical resistance.

What is the resistance of the human body?

around 1000 ohms
The resistance of the human body is around 1000 ohms.

What determines the danger of electrical shock?

The danger of electrical shock depends mainly on the total current flowing through the body. The current, according to Ohm’s Law, is proportional to the voltage divided by the total resistance of the circuit. This includes the skin resistance plus the body’s internal resistance.

What happens to the current when you touch a wire?

So, when you touch a ‘live’ wire, the current divides between the two pathways- namely, your body’s resistance, and the resistance of the electrical device. Thus, your body gets a share of the current based on the ratio of the resistances mentioned (inverse ratio of the resistances).

What is the electrical resistance of the human body?

That said, the majority of the body’s resistance is in the skin – the dead, dry cells of the epidermis (the skin’s outer layer) are very poor conductors. Depending on the person, the resistance of dry skin is usually between 1,000-100,000 Ohms. The skin’s resistance is much lower if it is wet or burnt/blistered.

What happens when nerves are affected by an electric shock?

When nerves are affected by an electric shock, the consequences include pain, tingling, numbness, weakness or difficulty moving a limb. These effects may clear up with time or be permanent.