Induced EMF and Magnetic Fields

Induced EMF and Magnetic Fields

Assessment

Interactive Video

Physics, Mathematics, Science

11th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the problem of a square loop moving in a magnetic field, detailing the calculations for induced EMF due to changes in position and magnetic field. It covers the total induced EMF, resulting current, and the direction of the induced current using the right-hand rule.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the direction of the square loop's movement in the given problem?

Negative y-direction

Positive x-direction

Negative x-direction

Positive y-direction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the resistance of the loop in the problem?

4.5 kiloohms

4.5 milliohms

4.5 ohms

4.5 megaohms

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the gradient of the magnetic field represent in this context?

The constant value of the magnetic field

The change in magnetic field strength over distance

The change in magnetic field strength over time

The direction of the magnetic field

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the rate of change of the magnetic field over time?

10^-4 Tesla per second

10^-1 Tesla per second

10^-2 Tesla per second

10^-3 Tesla per second

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the induced EMF due to position change calculated?

By adding the magnetic field strength and the loop's velocity

By dividing the magnetic field strength by the loop's velocity

By multiplying the area with the velocity and the magnetic field gradient

By multiplying the area with the rate of change of magnetic field over time

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the area of the square loop used in the calculations?

0.012 m^2

0.0144 m^2

0.144 m^2

0.12 m^2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula used to calculate the induced EMF due to the change in the magnetic field over time?

Epsilon = -dA/dt

Epsilon = -vB

Epsilon = -dB/dx

Epsilon = -dPhi/dt

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