Define 1 volt, Potential difference, Ohm's law in easy language

1 Volt

Potential Difference

  • The potential difference or voltage is given by current multiplied by the resistance.
  • When one Coulomb of charge flows between two points of a circuit, a voltage of one Volt equals one Joule of energy.

Ohm's law

  • Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it if all physical conditions and temperatures remain constant.
  • Ohm's law is a fundamental and important law of electric circuits.

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. What Is Ohm's Law Graph?
  4. State Ohms law. How can it be verified experimentally?
  5. How do you find the resistance to Ohm's law?
  6. Why Do We Use Ohm's Law?
  7. What Is Effective Resistance?
  8. What are the 3 forms of Ohm's law
  9. What are the limitations of Ohm's Law?
  10. What Is The Basic Principle Of Ohm's Law?
  11. What are the applications of ohm's law used in daily life?
  12. State Ohms Law. Express It Mathematically. Define Si Unit Of Resistance.
  13. Is resistance constant in Ohm's law?
  14. Obtain the equation J = \(\sigma E\) of Ohm's law on the basis of drift velocity
  15. Draw a circuit diagram to verify ohm’s law.

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CBSE CLASS XII Related Questions

  • 1.
    With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.


      • 2.
        Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

          • The total charge of the two spheres is conserved.
          • Both spheres attain the same potential.
          • The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2)}{(r_1 + r_2)}$
          • The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2) (r_1 + r_2)}{r_1 r_2}$

        • 3.
          Read the following paragraph and answer the questions that follow.
          A p-type or n-type semiconductor can be converted into a p-n junction by doping it with suitable impurity. The motion of majority charge carriers causes diffusion current across the junction while the barrier electric field causes motion of minority carriers for drift current. In case of unbiased diode, the diffusion and drift currents are equal. This equilibrium is disturbed by the biasing batteries. Diodes, therefore, allow currents in one direction. This property of diode is used in making rectifiers.


            • 4.
              A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.


                • 5.
                  Consider a cylindrical conductor of length \( l \) and area of cross-section \( A \). Current \( I \) is maintained in the conductor and electrons drift with velocity \( \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) \), where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]


                    • 6.
                      Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

                        CBSE CLASS XII Previous Year Papers

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