Question
A circular coil of wire consisting of 120 turns, each of
radius 12 cm carries a current of 0.30 A. What is the magnitude of the magnetic field B at the centre of the coil? (π = 3.14 )Solution
What is the point called where the total mass of a body is considered to be concentrated?
Angle of friction and angle of repose are
Half-life of a radioactive substance is 10 days. The time after which only 1/16th of it remains is:
A body of mass 3 kg is acted upon by two perpendicular forces 9 N and 12 N. Find the resultant of two forces and the acceleration of the body.
Which of the following phenomena establishes the transverse nature of light waves?
Magnetic susceptibility of a diamagnetic material is:
The energy emitted by the Sun is primarily due to what process?
A Nephometer is used to measure:
Which of the following statement is INCORRECT regarding the comparison between biot-savart law for the magnetic field and coulomb's law for the electro...
What is the main difference between alternating current (AC) and direct current (DC)?
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