# Magnetism and Electromagnetism - General Questions Online Exam Quiz

Magnetism and Electromagnetism - General Questions GK Quiz. Question and Answers related to Magnetism and Electromagnetism - General Questions. MCQ (Multiple Choice Questions with answers about Magnetism and Electromagnetism - General Questions

### When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage

Options

A : increases

B : decreases

C : remains constant

D : reaches zero

Options

A : 1,000 V

B : 2,000 V

C : 31.25 V

D : 3,125 V

### For a given wirewound core, an increase in current through the coil

Options

A : reverses the flux lines

B : decreases the flux density

C : increases the flux density

D : causes no change in flux density

### If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

Options

A : increases

B : decreases

C : remains the same

D : doubles

### 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

### 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 : 91.7 T

B : 917 T

C : 91 T

D : 9.7 T

Options

A : tesla

B : At/Wb

C : At/m

D : Wb

### 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

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