Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

Current is the rate of flow of charges. It will flow easily through the thick wire.

Why current will flow easily through the thick wire?

According to Ohm’s law, the resistance of a wire is inversely proportional to its cross-sectional area.

  • The thick wire will have a larger diameter than the thin wire, therefore, its cross-sectional area will be larger than the thin wire.
  • Therefore the resistance of the thick wire will be less than that of the thin wire.
  • The lesser the resistance, the more easily the current will pass through it.

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 Effective Resistance?
  4. How Do You Find The Resistance Of A Wire?
  5. State Ohms law. How can it be verified experimentally?
  6. What are the 3 forms of Ohm's law
  7. How do you find the resistance in Ohm's law?
  8. How Does The Resistance Of Wire Depends On Its Radius
  9. What Is Ohm's Law Graph?
  10. What are the applications of ohm's law used in daily life?
  11. What are the limitations of Ohm's Law?
  12. State Ohms Law. Express It Mathematically. Define Si Unit Of Resistance.
  13. Draw a circuit diagram to verify ohm’s law.
  14. Is resistance constant in Ohm's law?
  15. How many 176 Ω resistors (in parallel) are required to carry 5 A on a 220 V line?

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CBSE CLASS XII Related Questions

  • 1.
    Capacitors are manufactured with certain standard capacitances and working voltages. However, these standard values may not be the ones that are actually needed in a particular application. Two or more capacitors can be grouped in series or in parallel to achieve desired capacitance and voltage. When connected in series, the total capacitance decreases while the voltage rating increases, whereas in parallel connections, the total capacitance increases and maintains the same voltage rating. A capacitor stores energy in the electric field between its plates and stored energy is proportional to the square of the voltage and capacitance $U = \frac{1}{2}CV^2$, where symbols have their usual meanings.
    Two capacitors, one of $3 \ \mu$F and the other of $6 \ \mu$F, are connected in series in the circuit as shown in the figure, for a long time. }


      • 2.
        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.


          • 3.
            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 \[ \sigma = \frac{n e^2 \tau}{m}. \]


              • 4.
                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.


                  • 5.
                    Write two advantages of reflecting telescope over refracting telescope.


                      • 6.
                        Two air-filled capacitors of capacitances $C_1$ and $C_2$ are connected in parallel with a dc battery. After the capacitors are fully charged, a slab of dielectric constant K is inserted between the plates of each capacitor. How will the (i) charge on each capacitor and (ii) energy stored in the capacitor affected after the slab is introduced.

                          CBSE CLASS XII Previous Year Papers

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