True or False 1. Charge carriers normally do random motion inside conductors whe

Question

True or False

1. Charge carriers normally do random motion inside conductors when there is no electric field.

2. When electric field exists inside a conductor, the charge carriers inside it will move along straight lines in the direction of electric force.

3. When electric field exists inside a conductor, the charge carriers inside it will continue their “random” motion which is modified by the E field and have a drift velocity along the direction of electric force, which is opposite to the E field direction.

4. A battery supplies electrons to the circuits. When it runs out of electrons, the battery is “dead”.

5. When the ends of a conductor are connected to a battery’s ends, all points in the conductor has the same potential and the E field inside it is zero.

6. A simple microscopic model tells us that the average current density in a wire, increases with the number of charge carrier density, the drift speed and the charge of each carrier and is independent from the cross-sectional area of the wire.

7. When a potential difference is maintained across a conductor, it sets up an E field inside the conductor and produces a current proportional to the potential difference.

8. The direction of the current is in the same direction of flow of charge carriers inside copper or aluminum. Hint: what are the charge carriers in metal, electrons or protons?

9. The inverse of conductivity is resistivity. Wires with different length and shape made with the same material have different resistivity.

Explanation / Answer

1. True

2. False

3.True

4. False

5. False

6. True

7. True

8. True

9. False, if nature of material is same resistivity will be the same

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.