Which of the following is a scalar quantity?

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RRB ASSISTANT LOCO PILOT (Patna) 2013 click here to view all questions

Which of the following is a scalar quantity?

AElectric Field

BAverage Velocity

CPower

DMagnetic Momentum

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The most abundant element in the Earth's Crust is

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RRB ASSISTANT LOCO PILOT (Patna) 2013 click here to view all questions

The most abundant element in the Earth's Crust is

AAluminum

BSilica

Cmagnesium

DSodium

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Earth's gravitational pull in minimum in-

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RRB ASSISTANT LOCO PILOT (Patna) 2013 click here to view all questions

Earth's gravitational pull in minimum in-

ATroposphere

BStratosphere

CThermosphere

DExosphere

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_ formulated the Theory of Relativity

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KPTCL Assistant Exam (Mescom) SLOT1 2017 click here to view all questions

________ formulated the Theory of Relativity.

AAlbert Einstein

BThomas Alva Edison

CCharles Darwin

DMichael Faraday

Nithin K ? Jul 31 '2017 at 20:0

Answer is : Albert Einstein

Explanation:

The general theory of relativity is the modern theory of gravitation, proposed in 1915, also by Albert Einstein. The central point of the theory is the principle of general relativity, which states that all observers, regardless of their state of motion, will see the same laws of physics operating in the universe.

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An electric charge in uniform motion produces

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

An electric charge in uniform motion produces

Aan electric field only

Ba magnetic field only

Cboth electric and magnetic field

DNone of these

prajwal ? Dec 24 '2019 at 10:2

Correct answer is: both electric and magnetic field

Explanation:

The electric charge is defined as an intrinsic fundamental quantity that is present in every matter that exists.

It produces:

• The electric field.
• The magnetic field.

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• Electric charge always has an influencing space around it that has an electric field defined at every point in three-dimensional space irrespective of the motion of the charge. So, either it is in motion or not in motion, always have an electric field around it.
• Whenever a charge is in motion, due to its speed, temporary magnetic space is created around it which is there only till the charge is in motion. So, charge in motion has magnetic fields around it.

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