College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300



College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Medical devices implanted inside the body are often powered using transcutaneous energy transfer (TET), a type of wireless charging using a pair of closely spaced coils. An emf is generated around a coil inside the body by varying the current through a nearby coil outside the body, producing a changing magnetic flux. Calculate the average induced emf if each 10-turn coil has a radius of 1.50 cm and the current in the external coil varies from its maximum value of 10.0 A to zero in 6.25 × 10−6 s. (Hint: Recall from Topic 19 that the magnetic field at the center of the current-carrying external coil is B = N μ 0 I 2 R . Assume this magnetic field is constant and oriented perpendicular to the internal coil.)

To determine
Average Induced emf in each turn of a coil.


Given Info: current in the coil is 10A, number of turns is 10, radius of the coil is 1.5×102m2

Formula for maximum magnetic field,


  • R is the radius of the coil
  • N is the number of turns in the coil
  • is the current in the coil

Substitute 10 turns for N, 10A for I, 1.5×102m2 for A and 4π×107Tm/A in the above expression to get Bmax


Formula for induced emf in the coil,


  • ΔϕB is the change in magnetic flux
  • Δt is the change in time

Formula to calculate the  magnetic flux is,


Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

People who choose not to eat meat or animal products need to find an alternative to the USDA Eating Patterns wh...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Photosynthesis runs on the energy of ___________. a. light b. hydrogen ions c. O2 d. CO2

Biology: The Unity and Diversity of Life (MindTap Course List)

The metric prefix micro- means ___. (1.5)

An Introduction to Physical Science

What would the spectrum of an auroral display look like? Why?

Horizons: Exploring the Universe (MindTap Course List)

What essential amino acid makes tyrosine nonessential?

Chemistry for Today: General, Organic, and Biochemistry

What are sister chromatids?

Human Heredity: Principles and Issues (MindTap Course List)