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Chapter 30: Q. 10 (page 870)

A solenoid is wound as shown in FIGURE EX30.10.

a. Is there an induced current as magnet 1 is moved away from the solenoid? If so, what is the current direction through resistor R ?

b. Is there an induced current as magnet 2 is moved away from the solenoid? If so, what is the current direction through resistor R?

Short Answer

Expert verified

a.) This occurs when current flows from left to right in resistance.

b.)No, because the area vector of the solenoid loop is perpendicular to the magnetic field, there will be no induced flux or change in flux, and thus no resultant current.

Step by step solution

01

Step1:definition of solenoid

Solenoid in Physics A solenoid is a simple term for a wire coil that serves as an electromagnet. A solenoid is a device that can convert electrical energy into mechanical energy. It actually generates a magnetic field from the electric current in order to generate linear motion

02

Magnetic field works(part a)

a.) The magnetic field of the magnetic bar is to the left; if we move it away, the magnetic field will begin to decrease, causing current to be induced in the loop in such a way that the magnetic field to the left will increase. This occurs when the current flows from left to right in resistance.

03

Current direction(part b)

b.) No, there will be no induced flux or change in flux, and thus no resultant current, because the area vector of the solenoid loop is perpendicular to the magnetic field.

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