Where do we use static electricity in everyday life?

Static electricity is used in printers and photocopy machines where the static electric charge attracts the ink to the paper.

Other uses of static electricity are dust remover, air filters, and paint sprayers.


Related Questions

  1. What is balance point in potentiometer?
  2. Why High Resistance Is Used In Potentiometer?
  3. What Are Two Kinds Of Electricity?
  4. What Is Balancing Length In Potentiometer?
  5. How is potential gradient measured?

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CBSE CLASS XII Related Questions

  • 1.

    A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of $60^\circ$ in 0.2 s. The value of emf induced in the loop will be:

      • 5 V
      • 3.5 V
      • 2.5 V
      • Zero V

    • 2.

      The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.


        • 3.

          A rectangular loop of size 5 cm $\times$ 8 cm is lying in the $x$-$y$ plane in a uniform magnetic field $\vec{B} = (2.0\ \text{T})\hat{k}$. The total magnetic flux linked with the loop is:

            • 80 Wb
            • 16 Wb
            • \(8 \times 10^{-2}\) Wb
            • \(8 \times 10^{-3}\) Wb

          • 4.
            A current of \(4.0\,\text{A}\) flows through a wire of length \(1\,\text{m}\) and cross-sectional area \(1.0\,\text{mm}^2\), when a potential difference of \(2\,\text{V}\) is applied across its ends. Calculate the resistivity of the material of the wire.


              • 5.
                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 \(-x\)

                • 6.
                  Two point charges -Q and Q are located at points (d, 0) and (0, d) respectively, in x-y plane. The electric field E at the origin will be:

                    • \(\frac{1}{4\pi\epsilon_0} \frac{\sqrt{2}Q}{d^2} (\hat{i} - \hat{j})\)
                    • \(\frac{1}{4\pi\epsilon_0} \frac{\sqrt{2}Q}{d^2} (-\hat{i} - \hat{j})\)
                    • \(\frac{1}{4\pi\epsilon_0} \frac{Q}{d^2} (\hat{i} - \hat{j})\)
                    • \(\frac{1}{4\pi\epsilon_0} \frac{Q}{d^2} (-\hat{i} - \hat{j})\)
                  CBSE CLASS XII Previous Year Papers

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