Chapter 30: Q.1 (page 869)

The earth's magnetic field strength is $5.0 \times 10^{- 5} T$ . How fast would you have to drive your car to create a $1.0 V$ motional emf along your $1.0 - m$ -tall radio antenna? Assume that the motion of the antenna is perpendicular to $\vec{B}$ .

Short Answer

Expert verified

The speed of the car is $2000 m / s$

Step by step solution

Step 1. Given information

Earth's magnetic field strength, $B = 5 \times 10^{- 5} T$

Length of antenna, $l = 1.0 m$

The motional emf, $e = 1 V$

Step 2. Explanation

The motional emf

$\begin{array}{l} e = l (v \times B) \\ e = l (v B \sin) \\ e = l v B \\ (1 V) = (1 m) v (5 \times 10^{- 4} T) \\ v = 2000 m / s \end{array}$

The speed of the car is $2000 m / s$

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The earth's magnetic field strength is $5.0 \times 10^{- 5} T$ . How fast would you have to drive your car to create a $1.0 V$ motional emf along your $1.0 - m$ -tall radio antenna? Assume that the motion of the antenna is perpendicular to $\vec{B}$ .

Short Answer

Step by step solution

Step 1. Given information

Step 2. Explanation

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The earth's magnetic field strength is5.0×10−5T . How fast would you have to drive your car to create a 1.0Vmotional emf along your 1.0−m-tall radio antenna? Assume that the motion of the antenna is perpendicular toB→ .

Short Answer

Step by step solution

Step 1. Given information

Step 2. Explanation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Further Mechanics and Thermal Physics

Atoms and Radioactivity

Medical Physics

Thermodynamics

Physics of Motion

Oscillations

Study anywhere. Anytime. Across all devices.

The earth's magnetic field strength is $5.0 \times 10^{- 5} T$ . How fast would you have to drive your car to create a $1.0 V$ motional emf along your $1.0 - m$ -tall radio antenna? Assume that the motion of the antenna is perpendicular to $\vec{B}$ .