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Magnetism And Electromagnetism Online Exam Quiz

Important questions about Magnetism And Electromagnetism. Magnetism And Electromagnetism MCQ questions with answers. Magnetism And Electromagnetism exam questions and answers for students and interviews.

Options

A : 6,000 µT

B : 600 µT

C : 600 T

D : 6 T

Options

A : 1,000 V

B : 2,000 V

C : 31.25 V

D : 3,125 V

Options

A : tesla

B : At/Wb

C : At/m

D : Wb

4. If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage

Options

A : remains unchanged

B : reverses polarity

C : increases

D : decreases

5. When the current through the coil of an electromagnet reverses, the

Options

A : direction of the magnetic field reverses

B : direction of the magnetic field remains unchanged

C : magnetic field expands

D : magnetic field collapses

Options

A : 1111 At/Wb

B : 111 At/Wb

C : 11 At/Wb

D : 1 At/Wb

7. When a solenoid is activated, the force that moves the plunger is

Options

A : an electromagnetic field

B : a permanent magnetic field

C : varying voltage

Options

A : 14,400 At/Wb

B : 1,440 At/Wb

C : 9,000 At/Wb

D : 90,000 At/Wb

Options

A : 1.7 mA

B : 16 mA

C : 12 mA

D : 120 mA

10. An electromagnetic field exists only when there is

Options

A : an increasing current

B : decreasing current

C : voltage

D : current

1. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

Options

A : increase

B : decrease

C : remain constant

D : be excessive

Options

A : 90

B : 180

C : 270

D : 360

Options

A : 91.7 µT

B : 917 µT

C : 91 T

D : 9.7 T

4. If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

Options

A : increases

B : decreases

C : is zero

D : will remain constant

Options

A : True

B : False

C :

D :

Options

A : True

B : False

C :

D :

Options

A : True

B : False

C :

D :

Options

A : True

B : False

C :

D :

Options

A : True

B : False

C :

D :

Options

A : True

B : False

C :

D :