Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the centre of the ring […]
Weber/m² is equal to
Options
(a) volt (b) henry (c) tesla (d) all of these
Correct Answer:
tesla
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Graph of force per unit length between two long parallel current carrying conductors and the distance between them is
Options
(a) straight line (b) parabola (c) ellipse (d) rectangular hyperbola
Correct Answer:
rectangular […]
Magnetic susceptibility of a material is given as
Options
(a) M/H (b) M²/H² (c) MxH (d) H/M
Correct Answer:
M/H
Explanation:
Magnetic susceptibility Xe = M / H
where H is the magnetic field, […]
A uniform electric field and uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction […]
Sound production from tape recorder makes use of
Options
(a) crests and troughs (b) magnetic energy (c) electrical energy (d) none of these
Correct Answer:
magnetic energy
Explanation:
No explanation available. Be the […]
When an electron beam passes through an electric field they gain kinetic energy. lf the same electron beam passes through a magnetic field, then their
Options
(a) energy and momentum both remain unchanged […]
A thermally insulated rigid container contains an ideal gas heated by a filament of resistance 100 ohm through a current of 1 A for 5 min, then change in internal energy is
Options
A particle having a mass of 10⁻² kg carries a charge of 5 x 10⁻⁸C. The particle is given an initial horizontal velocity of 10⁵ m/s. In the presence of electric field E⃗ and magnetic […]
Two parallel long wires carry currents i₁ and i₂ with i₁ > i₂ . When the currents are in the same direction, then the magnetic field midway between the wires is 10μT. When the direction […]
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