(A) Isobaric
(B) isochoric
(C) Adiabatic
(D) isothermal process
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A moving charge produces:
(A) an electric field only
(B) a magnetic field only
(C) both electric and magnetic fields
(D) neither electric or a magnetic field
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An electron is moving in a circle of radius r in a uniform magnetic field B. Suddenly he field is reduced to B/2. The radius of the circle now becomes:
(A) r/2
(B) r/4
(C) 2r
(D) 4r
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Which of the following does not affect the motion of a moving electron?
(A) Electric field applied in the direction of motion
(B) Magnetic field applied I the direction of motion
(C) Electric field applied perpendicular to the direction of motion
(D) Magnetic field applied perpendicular to the direction of motion
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An electric charge q moves with a constant velocity v parallel to the lines of force of a uniform magnetic field B. The force experienced by the charge is:
(A) Bqv
(B) B/qv
(C) Bq/v
(D) zero
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A unit of magnetic induction is:
(A) weber/meter per s
(B) weber/ampere-meter
(C) weber/meter
(D) weber
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The resistance of piece of wire is 12Ω. It is bent to form an equilateral triangle. What is the equivalent resistance between any two corners of the triangle?
(A) 1.3Ω
(B) 4.0Ω
(C) 2.0Ω
(D) 2.7Ω
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Which combination of several identical resistors each of 2Ω gives rise to the resultant of 10/11Ω:
(A) 5 parallel, 2 series
(B) 3 parallel, 4 series
(C) 4 parallel, 3 series
(D) 2 parallel, 5 series
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If a resistor having resistance ‘R’ is cut into three equal parts, then equivalent of parallel combination is:
(A) 0/R
(B) R/9
(C) 3/R
(D) R/3