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.Management Sciences
Category: Electromagnetism
Minimum current required to produce a deflection of 1 mm on a scale at a distance of 1 meter is__________________?
0
A. 0.1 A
B. 1:00 AM
C. current sensitivity
D. 1 m A
Magnetic flux and flux density are related by___________________?
A. magnetic flux = flux density / area
B. magnetic flux = flux density x area
C. flux density = magnetic flux area
D. flux density = magnetic flux x area
n instrument which can measure potential without drawing any current is_____________________?
AA. voltmeter
B. galvanometer
C. cathode ray oscilloscope (CRO)
D. ammeter
When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?
A. a straight line parallel to the field
B. a parabola in a plane perpendicular to the field
C. a circle in a plane perpendicular to the field
D. a straight line along its initial direction
The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be__________________?
A. a circle
B. a spiral
C. an ellipse
D. helix
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