An electric field greater than about 3×106v/m causes air to break down (electrons are removed from the atoms and then recombine, emitting light). if you shuffle along a carpet and then reach for a doorknob, a spark flies across a gap you estimate to be 1mm between your finger and the doorknob.

estimate the voltage between your finger and the doorknob.

Voltage, V = 3000 volts

Explanation:

Given that,

Electric field,

The gap between your finger and the doorknob is 1 mm

We need to find the voltage between your finger and the doorknob. We know that the relation between voltage and electric field is given by :

V = 3000 volts

So, the voltage between your finger and the doorknob is 3000 volts. Hence, this is the required solution.

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