Dilute Metals MCQs with Answers PDF Download – Test 18

MCQ 86: 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

MCQ 87: 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

MCQ 88: 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

MCQ 89: 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

MCQ 90: 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