Physics
In a region of uniform magnetic induction B=102 tesla, a circular coil of radius 30cm and resistance π2 ohm is rotated about an axis which is perpendicular to the directon of B and which form a diameter of the coil. If the coil rotates at 200r± the amplitude of the alternating current induced in the coil is
12
Aug
In a region of uniform magnetic induction B=102 tesla, a circular coil of radius 30cm and resistance π2 ohm is rotated about an axis which is perpendicular to the directon of B and which form a diameter of the coil. If the coil rotates at 200r± the amplitude of the alternating current induced in the [...]
Which of the following is the longest wave ?
12
Aug
Which of the following is the longest wave ? Which of the following is the longest wave ? August 12, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The structure of solids is investigated by using
12
Aug
The structure of solids is investigated by using The structure of solids is investigated by using August 12, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of
12
Aug
A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of August 12, 2020 Category: Chapter 28 - Electromagnetic Waves [...]
Which of the following has minimum wave length ?
12
Aug
Which of the following has minimum wave length ? Which of the following has minimum wave length ? August 12, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The frequency of e.m wave which is best suited to observe a particle of radius 3×10−4cm, is of the order of
12
Aug
The frequency of e.m wave which is best suited to observe a particle of radius 3×10−4cm, is of the order of is of the order of The frequency of e.m wave which is best suited to observe a particle of radius 3×10−4cm August 12, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 [...]
The oscillating electric and magnetic field vectors of electromagnetic wave are oriented along
12
Aug
The oscillating electric and magnetic field vectors of electromagnetic wave are oriented along The oscillating electric and magnetic field vectors of electromagnetic wave are oriented along August 12, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The time constant of C – R circuit is
12
Aug
The time constant of C – R circuit is The time constant of C - R circuit is August 12, 2020 Category: Chapter 27 - Alternating Current , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V – 50 Hz. The secondary will have an output of
12
Aug
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V – 50 Hz. The secondary will have an output of The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an [...]
A step up transformer operates on a 230V line and a load current of 2 ampere. The ratio of the primary and secondary winding is 1:25 . What is the current in the primary?
12
Aug
A step up transformer operates on a 230V line and a load current of 2 ampere. The ratio of the primary and secondary winding is 1:25 . What is the current in the primary? A step up transformer operates on a 230V line and a load current of 2 ampere. The ratio of the primary [...]