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 .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Positively and negatively charged particles are simultaneously “shot” through the magnetic field of figure which is shown at “click here” in the plane of the paper . Which of the following statements is correct ?1) The force exerted on both charges is directed out of the page.
2) The force exerted on both charges is directed into the page.
3) The force exerted on the positively charged particle is directed into the page, and the fore on the negatively charged particle is directed out of the page.
4) The force exerted on the positively charged particle is directed out of the page, and the force exerted on the negatively charged particle is directed into the page.
5) The direction of the forces exerted on the two particles is indeterminate because the value of angle infinite has not been given .
