Dilute Metals MCQs (Multiple Choice Questions) PDF Download - 18

Dilute metals three dimensional lattice structure is consist of

1. thick metallic wires
2. thin metallic wires
3. thick metallic balls
4. thin metallic balls

In equation, ∊_r(w)=1-^w2_p.e/_{w²-w²o,e+iγw}, 'w_p is the

1. resonant frequency
2. positive frequency
3. microwave frequency
4. plasma frequency

Ampere's Law can be stated as 'a changing electric field creates a magnetic field. Thus, this law can be applied to generate a magnetic field and run

1. electric motor
2. universal power supply
3. hydro pump
4. electric generator

EMFs are measured in milliGauss (mG). The Environmental Protection Agency recommends that you limit your exposure to

1. ?5 mG to 2.5 mG
2. ?0.5 mG to 25 mG
3. 0.5 mG to 2.5 mG
4. 5 mG to 25 mG

Magnetism was first discovered in the ancient world, when people noticed that lodestones, naturally magnetized pieces of the mineral magnetite, could attract

1. mineral wool
2. polyurethane
3. paper Crete
4. iron