Why Do We Use Ohm's Law?

Ohm’s law is an important law in electric circuits which represents the relationship between voltage, current, and resistance.

  • Ohm’s law can be used to control the amount of current that flows through a circuit by adding resistors in order to reduce the current flow or by removing the resistors to increase the flow of current.
  • Ohm’s law is useful in the analysis of the circuits, especially when it was combined with Kirchhoff’s Laws.

Related Questions

  1. What is the necessary condition for a conductor to obey Ohm's Law?
  2. Why is the curve representing Ohm's law linear?
  3. State Ohms law. How can it be verified experimentally?
  4. How do you find the resistance to Ohm's law?
  5. What are the 3 forms of Ohm's law
  6. What Is Ohm's Law Graph?
  7. What are the limitations of Ohm's Law?
  8. What are the applications of ohm's law used in daily life?
  9. State Ohms Law. Express It Mathematically. Define Si Unit Of Resistance.
  10. Is resistance constant in Ohm's law?
  11. Draw a circuit diagram to verify ohm’s law.

Read More:

CBSE CLASS XII Related Questions

  • 1.
    Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

      • \( (M_x - M_z)<M_y \)
      • \( (M_x - M_y)<M_z \)
      • \( M_x>(M_y + M_z) \)
      • \( M_x<(M_y + M_z) \)

    • 2.
      Draw the plot of potential energy of a pair of nucleons as a function of their separation. Write two important conclusions that can be drawn from this plot.


        • 3.
          The resistance of a metal wire at \(20^\circ\text{C}\) is \(1.05\,\Omega\) and at \(100^\circ\text{C}\) is \(1.38\,\Omega\). Determine the temperature coefficient of resistivity of this metal.


            • 4.
              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 \(-x\)

              • 5.

                (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.


                  • 6.

                    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 $n$.

                      CBSE CLASS XII Previous Year Papers

                      Comments


                      No Comments To Show