Explain why a charged body loses its charge if we touch it with our hand.

Our body is an electrical conductor. If we touch a charged body with our hand, the charges are conducted through our bodies to the earth.

  • When electric charges are transferred to earth directly with minimum resistance, an instantaneous discharge of the charged body occurs.
  • This phenomenon is called earthing.
  • Therefore, if we touch it with our hand, the charged body loses its charge due to earthing.

Related Questions

  1. Give two examples of drift velocity.
  2. Can rubbing cause static electricity?
  3. Define the drift velocity of electrons in a conductor?
  4. Explain What Happens When Amber is Rubbed with Wool or Silk.
  5. What is the major difference between static electricity and current electricity?

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CBSE CLASS XII Related Questions

  • 1.

    (I) The real image of an object placed between $f$ and $2f$ from a convex lens can be seen on a screen placed at the image location. If the screen is removed, is the image still there? Explain.

    (II) Plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.


      • 2.

        A parallel beam of monochromatic light falls normally on a single slit of width $a$ and a diffraction pattern is observed on a screen placed at distance $D$ from the slit. Explain:

        (I) the formation of maxima and minima in the diffraction pattern, and

        (II) why the maxima go on becoming weaker and weaker with its increasing number $n$.


          • 3.
            In a region, the electric potential varies as \(V = 10 - 50x\), where \(V\) is in volts and \(x\) is in meters. The electric field in the region is

              • \(10\ \text{N/C}\) along \(+x\)
              • \(10\ \text{N/C}\) along \(-x\)
              • \(50\ \text{N/C}\) along \(+x\)
              • \(50\ \text{N/C}\) along \(-x\)

            • 4.

              A ray of light MN is incident normally on the face corresponding with side AB of a prism with an isosceles right-angled triangular base ABC. Trace the path of the ray as it passes through the prism when the refractive index of the prism material is (i) $\sqrt{2}$, and (ii) $\sqrt{3}$.


                • 5.

                  A magnet held vertically, with its north pole down, is dropped along the axis of a closed solenoid placed vertically on a table. If the observer looks down from the top,

                    • the induced current will flow in the anticlockwise direction.
                    • the induced current will flow in the clockwise direction.
                    • no induced current will flow in the solenoid.
                    • the magnet will fall with a constant velocity.

                  • 6.

                    An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

                      CBSE CLASS XII Previous Year Papers

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