A steady current flows in a metallic conductor of the non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are?

By Ritesh|Updated : November 9th, 2022

(a) current, electric field and drift speed

(b) drift speed only

(c) current and drift speed

(d) current only

A steady current flows in a metallic conductor of the non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are current only.

The explanation for the correct option:

  • A metallic conductor with a non-uniform cross-section has a constant current while a steady current flows through it.
  • The current stays constant since it is not reliant on the conductor area.

The justification for the wrong choices is:

  • Drift speed, electric field, and current density are all inversely correlated with the cross-sectional area.
  • Along the conductor's whole length, these values vary.

Properties of current

In electrical circuits, electric current is a crucial quantity. Electricity has become so ingrained in our daily lives that it is difficult to picture existence without it. Therefore, understanding what current is and its characteristics is crucial.

  1. We are aware that the movement of electrons produces an electric current. Electrical energy is the name given to the labor involved in moving the electron stream. Heat energy, light energy, and other types of energy can all be created from electrical energy. For instance, heat energy is produced when electric energy is used in an iron box. Similarly to this, a bulb's electric energy is transformed into light energy.
  2. Alternating current (AC) and direct current are the two different types of electric current (DC). While alternating electricity can flow in both directions, direct current can only go in one direction. In industrial settings, direct current is rarely employed as the main energy source. The majority of its uses are low-voltage ones, such as airplane applications, and battery charging. Appliances for both domestic and industrial and commercial use run on alternating currents.
  3. Amperes are used to measure electric current. An electric charge of one coulomb passing past a given place in one second is represented by one ampere of current.
    1. 1 ampere = 1 coulomb/ 1 second
  4. A positive charge would go in the direction that an electric current typically flows. From this point forward, the battery's negative terminal receives current flowing through the external circuit instead of its positive terminal.

Summary:

A steady current flows in a metallic conductor of the non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are?

In a metallic conductor with a non-uniform cross-section, a constant current circulates. Only current is the quantity or quantities that remain constant along the conductor's length.

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