A Parallel-Plate Capacitor , Made of Two Circular Plates of Radius

question 48

Multiple Choice

A parallel-plate capacitor , made of two circular plates of radius R = 10 cm, is being charged. What is the magnitude of the induced magnetic field induced by the displacement current between the plates of the capacitor at a distance r = 2 cm from the axis of the plates at a time when the electric field varies at the rate dE/dt = 2 × 10¹² V/m s?

• A)0.7 × 10^-7 T
• B)2.2 × 10^-7 T
• C)8.1 × 10^-7 T
• D)3.5 × 10^-7 T
• E)1.3 × 10^-7 T

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Definitions:

Epidermis

The outermost layer of the skin that acts as a barrier against environmental damage and pathogens.

Dermis

The thick layer of living tissue below the epidermis that forms the true skin, containing sweat glands, hair follicles, and connective tissue.

Stratum Basale

The deepest layer of the epidermis, consisting of basal cells that continuously divide and produce new skin cells.

Melanocytes

Cells located in the bottom layer of the skin's epidermis that produce melanin, the pigment responsible for skin color.