Why Do We Get Electric Shock?
Have you ever touched a switchboard with wet hands and felt a sudden jolt? Or maybe you touched a metal surface and felt a quick “zap”? That uncomfortable feeling is called an electric shock.
But why does it actually happen?
Let’s understand it in a simple way.
What Is an Electric Shock?
An electric shock happens when electric current passes through your body.
Our body contains water and salts, which means it can conduct electricity. So when you touch a live wire or an exposed electrical source, electricity may try to pass through you — and that’s when you feel a shock.
Why Does Current Pass Through Us?
Electricity always tries to move from a point of higher voltage to lower voltage.
If:
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You touch a live wire
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And your body is connected to the ground
You complete the circuit.
And once the circuit is complete, current flows through your body.
That flow of current is what causes the shock.
What Do We Actually Feel?
When current passes through your body:
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It interferes with nerve signals
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Muscles may suddenly contract
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You may feel pain or lose control for a moment
In serious cases, it can even affect the heart.
The danger depends on:
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The amount of current
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How long it flows
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The path it takes through your body
Why Wet Hands Increase Shock Risk
Water (especially with impurities) conducts electricity better than dry skin.
So if your hands are wet:
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Your body resistance decreases
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More current can pass
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Shock becomes stronger
That’s why we are always told not to touch switches with wet hands.
Why Birds Don’t Get Shock on Wires
You might have seen birds sitting on electric wires. Why don’t they get shocked?
Because they are not touching the ground or another wire at a different voltage.
There’s no voltage difference across their body — so no current flows.
No current = no shock.
The Science Behind It
The severity of shock depends on:
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Current (I)
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Voltage (V)
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Resistance (R)
According to Ohm’s Law:
Current = Voltage ÷ Resistance
If resistance is low (like wet skin), current increases.
