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- Question
Magnetic field lines about a current-carrying wire
Options- A. circle the wire in closed loops
- B. extend radially from the wire
- C. both of these
- D. None of the above
- Correct Answer
- circle the wire in closed loops
ExplanationElectric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire.
- 1. Middle latitude cyclones are fueled by?
Options- A. air high in the atmosphere
- B. polar continental air masses
- C. energy from falling precipitation
- D. All of the above Discuss
- 2. Long Sightedness means
Options- A. near images are blurry
- B. far images are blurry
- C. Both A & B
- D. None of the above Discuss
- 3. Second and third class levers are differentiated by
Options- A. the location of the load
- B. the location of the fulcrum
- C. the presence of multiple loads
- D. the type of fulcrum present Discuss
- 4. Which elements are malleable and good conductors of electricity?
Options- A. tin and silver
- B. iodine and silver
- C. tin and xenon
- D. iodine and xenon Discuss
- 5. Magnetic domains normally occur in
Options- A. copper
- B. silver
- C. iron
- D. All of the above Discuss
- 6. Where does hydroelectric energy come from?
Options- A. Air
- B. Water
- C. Solar
- D. All of the above Discuss
- 7. The GPS device in an automobile uses which communication channel?
Options- A. Satellite
- B. Microwave
- C. Radio frequency
- D. Infrared Discuss
- 8. The combined gas law relates which of the following?
Options- A. Volume & Temperature
- B. Temperature & Pressure
- C. Volume & Pressure
- D. Volume, Temperature & Pressure Discuss
- 9. Which is evidence that supports the dynamo theory?
Options- A. Earth's outer core contains liquid that conducts electricity
- B. Earth's core contains a large amount of iron
- C. Granite and basalt conduct electricity
- D. Convection occurs in Earth's inner core Discuss
- 10. Which color has the highest energy?
Options- A. Violet
- B. Red
- C. Blue
- D. White Discuss
Physics problems
Search Results
Correct Answer: air high in the atmosphere
Explanation:
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth.
Middle latitude cyclones are fueled by air high in the atmosphere.
Correct Answer: near images are blurry
Correct Answer: the location of the load
Correct Answer: tin and silver
Explanation:
Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.
Correct Answer: iron
Explanation:
A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction.
Correct Answer: Water
Correct Answer: Satellite
Explanation:
All automobiles uses satellite communication channel for their GPS devices.
Correct Answer: Volume, Temperature & Pressure
Explanation:
The combined gas law states that the ratio between the pressure-volume product and the temperature of a system remains constant.
Hence it depends on all the three Volume, Temperature & Pressure.
Correct Answer: Earth's core contains a large amount of iron
Explanation:
In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.
Earth's crust core contains a large amount of iron and nickel is the evidence of the dynamo theory.
Correct Answer: Violet
Explanation:
Violet colour has the highest energy. The higher the frequency, the faster the oscillations and thus the higher the energy. Therefore, the highest-frequency ultra-violet light or the lowest wavelength is violet.
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