An electric kettle has two heating elements. One brings it to boil in ten minutes
An electric kettle has two heating elements. One brings it to boil in ten minutes and the other in fifteen…
7 years ago
Physics
A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic
A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic field of strength…
7 years ago
Two bulbs 40 watt and 60 watt and rated voltage 240 V are connected in series
Two bulbs 40 watt and 60 watt and rated voltage 240 V are connected in series across a potential difference…
7 years ago
A galvanometer is converted into an ammeter by connecting
A galvanometer is converted into an ammeter by connecting Options (a) low resistance in parallel (b) low resistance in series…
7 years ago
A long straight wire carries a certain current and produces a magnetic field
A long straight wire carries a certain current and produces a magnetic field of 2 x 10⁻⁴ weber/m² at a…
7 years ago
An electron moving in a uniform magnetic field of induction of intensity B,
An electron moving in a uniform magnetic field of induction of intensity B, has its radius directly proportional to Options…
7 years ago
A proton carrying 1 MeV kinetic energy is moving in a circular path of radius
A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field.…
7 years ago
Curie temperature above which
Curie temperature above which Options (a) paramagnetic material becomes ferromagnetic material (b) ferromagnetic material becomes diamagnetic material (c) Ferromagnetic material…
7 years ago
An alternating electric field, of frequency v, is applied across the dees (radius = R)
An alternating electric field, of frequency v, is applied across the dees (radius = R) of a cyclotron that is…
7 years ago
The direction of magnetic line of force of a bar magnet is
The direction of magnetic line of force of a bar magnet is Options (a) from south to north pole (b)…
7 years ago