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Magnetic Fields and Electric Forces

Magnetic Fields and Electric Forces

Assessment

Interactive Video

Physics, Science

10th - 12th Grade

Practice Problem

Hard

Created by

Emma Peterson

FREE Resource

The video tutorial explains the physics of a moving rod in a magnetic field. It covers the calculation of induced EMF using the change in magnetic flux, the determination of the electric field in the rod, and the energy dissipated by a resistor. The tutorial also discusses the force required to move the rod, linking mechanical and electrical energy concepts.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the length of the rod that is moving in the magnetic field?

1 meter

5 meters

2 meters

0.5 meters

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula is used to calculate the induced EMF in the circuit?

E = mc^2

V = IR

F = ma

Induced EMF = Change in Flux / Change in Time

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between the area change and the velocity of the rod?

Area change is directly proportional to velocity

Area change is equal to velocity squared

Area change is inversely proportional to velocity

Area change is independent of velocity

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of the magnetic field in which the rod is moving?

15 Tesla

5 Tesla

2 Tesla

10 Tesla

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the current in the circuit calculated?

Current = Resistance / Voltage

Current = Voltage x Resistance

Current = Voltage / Resistance

Current = Voltage + Resistance

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the electric field across the rod if the induced EMF is 5 volts?

15 V/m

10 V/m

5 V/m

20 V/m

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much energy is dissipated by the resistor after 5 seconds?

10 Joules

5 Joules

15 Joules

12.5 Joules

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