Home
Class 12
PHYSICS
If the resistance of our body is so larg...

If the resistance of our body is so large (`~~ 10 K Omega`) why does one experience a strong shock when one accidentaly touches the line wire, say 240 volt supply?

Text Solution

Verified by Experts

When a person accidently touches the line wire of a 240 V supply, a current `I=240//10000 = 0.024 A=24 mA` , flows through the body of the person. This current interferes with the nerve process related to our heart beating, which is basically electrical in nature, this in turn accounts for a strong shock.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Conceptual Problems|3 Videos
  • CURRENT ELECTRICITY

    PRADEEP|Exercise Very short Q/A|7 Videos
  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Exercise|191 Videos

Similar Questions

Explore conceptually related problems

Why does one experience a strong shock when one accidentally touches a live wire of, say, 220 V ?

The resistance of a potentiometer wire of length 10 m is 20 Omega . A resistance box and a 2 volt accumulator are connected in series with it. What resistance should be introduced in the box to have a potential drop of one microvolt per millimetre of the potentiometer wire ?

A certain thermocouple (treat it as a seat of e.m.f) which has a total resistance of 10Omega has one junction in melting ice and the other junction in melting ice and the other junction is steam. The e.m.f. between its ends as measured with a potentiometer is 4 millivolt. What would be its reading when it is connected to a milli volt meter which has a resistance of 50 ohm?

A piece of wire of resistance R is redrawn by pulling it until its length is doubled. Compare the new resistance with the original value. Two lamps , one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to a 220 V supply. What is the current drawn from the supply line ?

A copper wire of radius 0.1 mm and resistance 1 k Omega is connected across a power supply of 20 V. (i) How many electrons are transferred per second between the supply and the wire at one end ? (ii) Write down the current density in the wire.