Chapter 27: Q. 5 (page 762)

5. The electron drift speed is $2.0 \times 10^{- 4} m / s$ in a metal with a mean time between collisions of $5.0 \times 10^{- 14} s$ . What is the electric field strength?

Short Answer

Expert verified

The electric field strength is $22.8 mV / m$ .

Step by step solution

Given Information

Electron drift speed $= 2.0 \times 10^{- 4} m / s$

Time between collisions $= 5.0 \times 10^{- 14} s$

Explanation

The drift speed is given as a function of the electric field as

$v_{d} = \frac{e τ}{m} E,$

The electric field as

$E = \frac{m v_{d}}{e τ} .$

Mass of the electron is $m = 9.1 \cdot 10^{- 31} kg$ and the charge, the elementary charge, is $m = 9.1 \cdot 10^{- 31} kg$ we can find the value of the electric field strength to be

role="math" localid="1648877656088" $E = (\frac{9.1 \times 10^{- 31} k g \times 2 \times 10^{- 4} m / s}{1.6 \times 10^{- 19} c \times 5 \times 10^{- 14} s})$

$E = 22.75 mV / m$

Final Answer

Hence, the electric field strength is $22.8 mV / m .$

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5. The electron drift speed is $2.0 \times 10^{- 4} m / s$ in a metal with a mean time between collisions of $5.0 \times 10^{- 14} s$ . What is the electric field strength?

Short Answer

Step by step solution

Given Information

Explanation

Final Answer

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5. The electron drift speed is 2.0×10-4m/s in a metal with a mean time between collisions of 5.0×10-14s. What is the electric field strength?

Short Answer

Step by step solution

Given Information

Explanation

Final Answer

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Physics of Motion

Conservation of Energy and Momentum

Nuclear Physics

Electricity

Electrostatics

Electromagnetism

Study anywhere. Anytime. Across all devices.

5. The electron drift speed is $2.0 \times 10^{- 4} m / s$ in a metal with a mean time between collisions of $5.0 \times 10^{- 14} s$ . What is the electric field strength?