Home
Class 12
PHYSICS
Can we produce high voltage on the human...

Can we produce high voltage on the human body without getting a shock ?

Text Solution

Verified by Experts

The correct Answer is:
`4 J`
At maximum compression of spring, velocities of block B and C are same (say `v_(0)` )
then by conservation of linear momentum `3(2) = (3 + 6)v_(0) rArr v_(0) = (2)/(3) m//s`
At this instant energy stored in spring `= (1)/(2)(3)(2)^(2) -(1)/(2)(3 + 6)((2)/(3))^(2) = 6 - 2 = 4 J`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ALLEN |Exercise EXERCISE-III|26 Videos

  • CURRENT ELECTRICITY

    ALLEN |Exercise EXERCISE-IV A|32 Videos

  • CIRCULAR MOTION

    ALLEN |Exercise EXERCISE (J-A)|6 Videos

  • GEOMETRICAL OPTICS

    ALLEN |Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Can we use v=romega for a body rolling without sliding?

Assertion: We cannot change the temperature of body without giving (or taking) heat to (or from) it. Reason: According to principle of conservation of energy, total energy of a system should remains conserved.

The ceiling of a long hall is 20 m high. What is the maximum horizontal distance that a ball thrown with a speed of 40 m can go without hitting the ceiling of hall (g=10 ms^(-2)) ?

(a) A comb run through one’s dry hair attracts small bits of paper. Why? What happens if the hair is wet or if it is a rainy day? (Remember, a paper does not conduct electricity.) (b) Ordinary rubber is an insulator. But special rubber tyres of aircraft are made slightly conducting. Why is this necessary? (c) Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion. Why? (d) A bird perches on a bare high power line, and nothing happens to the bird. A man standing on the ground touches the same line and gets a fatal shock. Why?

6 balls marked as 1,2,3,4,5 and 6 are kept in a box. Two players A and B start to take out 1 ball at a time from the box one after another without replacing the ball till the game is over. The number marked on the ball is added each time to the previous sum to get the sum of numbers marked on the balls taken out. If this sum is even, then 1 point is given to the players. the first player to get 2 points is declared winner. at the start of the game, the sum is 0. if A starts to take out the ball, find the number of ways in which the game can be won.

A man is standing against a wall such that his right shoulder and right leg are in contact with the surface of the wall along his height. Can he raise his left leg at this position without moving his body away from the wall? Why? Explain. (AS_(7))

A cylindrical capacitor with external radius R, internal radius R-d(dltltR ) , length l and mass M hangs on an insulating cord in a region where there is a homogenous, vertical magnetic field of strength B. It can rotate freely as a whole around its vertical axis, but is constrained, so that it can not move horizontally. The capacitor is charged and there is a voltage difference If without being mechaically disturbed, the capacitor is discharged through an internal radial wire then find maximum angular velocity of capacitor

Can we get out of smooth surface by taking jump on it ?

ALLEN -CURRENT ELECTRICITY-EX.II
  1. Can we produce high voltage on the human body without getting a shoc...

    Text Solution

    |

  2. In the Bohr's model of hy drogen atom, the electron moves around the n...

    Text Solution

    |

  3. Lengths and cross-sectional areas of three copper wires are (l, A ), (...

    Text Solution

    |

  4. When a piece of aliminium wire of finite length is drawn through a ser...

    Text Solution

    |

  5. Every atom makes one free electron in copper. If 1.1 ampere current is...

    Text Solution

    |

  6. A metal wire of resistance R is cut into three equal pieces that are t...

    Text Solution

    |

  7. Two cells X and Y are connected to a resistance of 10Omega shown in th...

    Text Solution

    |

  8. Masses of 3 wires of same metal are in the ratio 1 : 2 : 3 and their l...

    Text Solution

    |

  9. As the temperature of a metallic resistor is increased,the product of ...

    Text Solution

    |

  10. What will b e the equivalent resistance b etween the A and D?

    Text Solution

    |

  11. In the arrangement of resistances shown in the circuit. The potential...

    Text Solution

    |

  12. It is observed in a potentiometer experiment that no current passes th...

    Text Solution

    |

  13. The resistance across P and Q in the given figure is

    Text Solution

    |

  14. When no current is passed through a conductor,

    Text Solution

    |

  15. A steady current flows in a metallic conductor of non-uniform cross-se...

    Text Solution

    |

  16. Internal resistance of a cell depends on

    Text Solution

    |

  17. The resistance of the circuit between A and B is:-

    Text Solution

    |

  18. The number of free electrons per 100 mm of ordinary copper wire is 2xx...

    Text Solution

    |

  19. The potential difference between the terminals of a cells is found to ...

    Text Solution

    |

  20. What is the reading of ammeter is adjoining circuit diagram.

    Text Solution

    |

  21. The following diagram shows the circuit for the comparision of e.m.f. ...

    Text Solution

    |