When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle will be infinite will be zero will depend on the amount of e.m.f. applied will depend on the radius of the circle TRUE ANSWER : ? YOUR ANSWER : ?
The Biotsavart's law is a general modification of Lenz's law Kirchhoff's law Faraday's laws Ampere's law TRUE ANSWER : ? YOUR ANSWER : ?
An electromagnetic field exists only when there is current voltage an increasing current decreasing current TRUE ANSWER : ? YOUR ANSWER : ?
A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)? 270 180 360 90 TRUE ANSWER : ? YOUR ANSWER : ?
When the north poles of two bar magnets are brought close together, there will be no force a downward force a force of repulsion a force of attraction TRUE ANSWER : ? YOUR ANSWER : ?
The stray line of magnetic flux is defined as A line of magnetic flux in a non-uniform field A line vertical to the flux lines The mean length of a ring shaped coil A line of magnetic flux which does not follow the designed path TRUE ANSWER : ? YOUR ANSWER : ?
Gilbert is a unit of magnetomotive force permittivity conductance electromotive force TRUE ANSWER : ? YOUR ANSWER : ?
The uniform magnetic field is None of the listed here The field in which all lines of magnetic flux are parallel and equidistant The field of a single conductor The field of a set of parallel conductors TRUE ANSWER : ? YOUR ANSWER : ?
How does the magnetic compass needle behave in a magnetic field? None of the listed here It starts rotating It assures a position which follows a line of magnetic flux It assures a position right angle to magnetic field TRUE ANSWER : ? YOUR ANSWER : ?
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 200 At 150 At 100 At 300 At TRUE ANSWER : ? YOUR ANSWER : ?