Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the numerical value of the actual mks permeability of the core material in the figure at “click here” ?1) 5.02 x 10^-11
2) 7.85 x 10^-3
3) 3.14 x 10^-2
4) 1.99 x 10^10
Physics Magnetism,Magnetic Effects Of Current Level: High School
If the value of current flowing in the coil is 6 mA , what is the value of EF1 ?
1) 0.894 x 10^-3 Wb
2) 1.05 x 10^-3 Wb
3) 1.23 x 10^-3 Wb
4) 2.09 x 10^-3 Wb
If the value of current flowing in the coil is 6 mA , what is the value of EF2 ?
1) 0.970 x 10^-3 Wb
2) 1.18 x 10^-3 Wb
3) 1.83 x 10^-3 Wb
4) 1.95 x 10^-3 Wb
If the value of current flowing in the coil is 6 mA , What is the value of EF3 ?
1) 0.583 x 10^4 Wb
2) 0.993 x 10^-4 Wb
3) 0.137 x 10^-3 Wb
4) 0.267 x 10^-3 Wb
Question Diagram
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the equivalent resistance of the core as seen by the applied mmf ?1) 5.75 x 10^3 1/H
2) 9.83 x 10^3 1/H
3) 11.4 x 10^3 1/H
4) 17.3 x 10^3 1/H
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the reluctance R24 presented to flux EF2 ?1) 0.743 x 10^3 1/H
2) 2.93 x 10^3 1/H
3) 5.10 x 10^3 1/H
4) 8.12 x 10^3 1/H
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the reluctance R234 presented to flux EF3 in the figure which is shown at ‘click here’ ?1) 1.75 x 10^3 1/H
2) 5.10 x 10^3 1/H
3) 5.73 x 10^3 1/H
4) 8.08 x 10^3 1/H
Physics Magnetism,Magnetic Effects Of Current Level: High School
If the direction of the current flowing in the wire 1 of figure which is shown at “click here” were reversed , In which direction does the flux at point p ?1) 0.10 x 10^-5 Wb/m^2
2) 0.55 x 10^-5 Wb/m^2
3) 0.71 x 10^-5 Wb/m^2
4) 1.36 x 10^-5 Wb/m^2
5) 3.39 x 10^-5 Wb/m^2
6) 3.99 x 10^-5 Wb/m^2
7) 4.80 x 10^-5 Wb/m^2
Physics Magnetism,Magnetic Effects Of Current Level: High School
If the direction of the current flowing in the wire 1 of figure which is shown at “click here” were reversed , what would be the value of the total flux density at point p ?1) 0.10 x 10^-5 Wb/m^2
2) 0.55 x 10^-5 Wb/m^2
3) 0.71 x 10^-5 Wb/m^2
4) 1.36 x 10^-5 Wb/m^2
5) 3.39 x 10^-5 Wb/m^2
6) 3.99 x 10^-5 Wb/m^2
7) 4.80 x 10^-5 Wb/m^2
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the total flux density at point p in the figure which is shown at “click here”1) 0.10 x 10^-5 Wb/m^2
2) 0.55 x 10^-5 Wb/m^2
3) 0.71 x 10^-5 Wb/m^2
4) 1.36 x 10^-5 Wb/m^2
5) 3.39 x 10^-5 Wb/m^2
6) 3.99 x 10^-5 Wb/m^2
7) 4.80 x 10^-5 Wb/m^2
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the flux density at point p in the figure which is shown at ‘click here’ due only to the 3-A current in the proton of wire 2 shown ?1) 1.64 x 10^-5Wb/m^2
2) 2.45 x 10^-5Wb/m^2
3) 3.11 x 10^-5Wb/m^2
4) 3.65 x 10^-5Wb/m^2
Physics Magnetism,Magnetic Effects Of Current Level: High School
A small portion of parallel straight current-carrying conductors is shown in the figure at ‘click here’ . In which direction does the flux at point p .1) Out of the page.
2) To the left of the page.
3) To the right of the page.
4) Into the page .
Physics Magnetism,Magnetic Effects Of Current Level: High School
A small portion of parallel straight current-carrying conductors is shown in the figure at ‘click here’ . What is the flux density at point p due only to the 5-A current in the portion of wire 1 shown .1) 1.75 x 10^-6 Wb/m^2
2) 2.35 x 10^-6 Wb/m^2
3) 3.51 x 10^-6 Wb/m^2
4) 1.75 x 10^-5 Wb/m^2
5) 2.35 x 10^-5 Wb/m^2
6) 5.10 x 10^-5 Wb/m^2
Physics Magnetism,Magnetic Effects Of Current Level: High School
If the current in the loop of figure which is shown at ‘click here’ were halved , the total flux threading the loop would .1) halve
2) be reduced to one-fourth of its previous value .
3) decrease to three-fourths of its original value.
4) decrease by more than one-half but be greater than one-fourth its previous value .
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the value of the total flux threading the loop in the figure at ‘click here’ ?1) 5.92 x 10^-8 Wb
2) 1.78 x 10^-7 Wb
3) 5.92 x 10^-7 Wb
4) 1.18 x 10^-6 Wb
5) None of the above
Physics Magnetism,Magnetic Effects Of Current Level: High School
What is the flux density of the current loop in the plane of the loop shown in the figure at “click here”1) 1.68 x 10^-5 Wb/m^2
2) 2.36 x 10^-5 Wb/m^2
3) 1.68 x 10^-4 Wb/m^2
4) 2.36 x 10^-4 Wb/m^2
5) 2.87 x 10 Wb/m^2
6) None of the above values.
Physics Magnetism,Magnetic Effects Of Current Level: High School
If the value of angle in the figure which is shown at “click here” 44 and 45 degree , find the speed of the negatively charged particle if the field has a flux density of 0.8 Wh/m^2 and the particle has a charge of 4.8 x 10^-15 C . The force exerted on the charged particle is 7.5 x 10^-12 N .1) 1.95 x 10^3 m/sec
2) 2.76 x 10^3 m/sec
3) 3.62 x 10^3 m/sec
4) 6.43 x 10^3 m/sec
5) 1.95 x 10^4 m/sec
6) 2.76 x 10^4 m/sec
7) 5.12 x 10^4 m/sec
8) None of the above values .
