What is the difference between short-circuit and overloading?

The differences between short-circuiting and overloading are: 

Short-circuiting Overloading
Short-circuiting happens when a live wire comes in contact with a neutral wire. Overloading happens when the amount of current drawn by a source exceeds the amount of current that a source can supply.
At the point of short-circuit, the potential difference falls to zero. Potential difference assumes non-zero but a very low value in overloading.
The current flow is high at the time of short-circuiting. During overloading, the flow of current is lower than the flow at the time of shortcircuiting.

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CBSE CLASS XII Related Questions

  • 1.

    A circular coil of 100 turns and radius $\left(\frac{10}{\sqrt{\pi}}\right)$ cm carrying current of $5.0\,\text{A}$ is suspended vertically in a uniform horizontal magnetic field of $2.0\,\text{T}$. The field makes an angle $30^\circ$ with the normal to the coil. Calculate:

    (I) the magnetic dipole moment of the coil, and

    (II) the magnitude of the counter torque that must be applied to prevent the coil from turning.


      • 2.

        Find the ratio $\dfrac{\lambda_\alpha}{\lambda_p}$ of the de Broglie wavelength $\lambda_\alpha$ associated with an alpha particle to the de Broglie wavelength $\lambda_p$ associated with a proton if both are moving with the same velocity.


          • 3.
            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.


              • 4.

                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.

                • 5.

                  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

                  • 6.

                    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) $\sqrt{3}$.

                      CBSE CLASS XII Previous Year Papers

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