Question

A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. A R = 13 ? resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. B, into page 2 m/s 1) What is the current in the resistor? (Express your answer to two significant figures.) 2) What direction is the current in the bar (up or down)? up down 3) What is the magnetic force on the bar? (Express your answer to two significant figures.)

          A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. A R = 13 ? resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails.

B, into page

2 m/s

1) What is the current in the resistor? (Express your answer to two significant figures.)

2) What direction is the current in the bar (up or down)?

up
down

3) What is the magnetic force on the bar? (Express your answer to two significant figures.)

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A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. A R = 13 ? resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails.

B, into page

2 m/s

1) What is the current in the resistor? (Express your answer to two significant figures.)

2) What direction is the current in the bar (up or down)?

up
down

3) What is the magnetic force on the bar? (Express your answer to two significant figures.)

Added by Hector A.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

05/05/2022

Step 1

4 \, T \) \( L = 0.12 \, m \) \( v = 2 \, m/s \) \( R = 13 \, \Omega \) Plugging in the values: \( I = \frac{0.4 \, T \times 0.12 \, m \times 2 \, m/s}{13 \, \Omega} \) Show more…

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A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. A resistor with R = 13 Ω is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. What is the current in the resistor? (Express your answer to two significant figures.) What direction is the current in the bar (up or down)? What is the magnetic force on the bar? (Express your answer to two significant figures.)

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