NEET Last 32 Years Solved 1988 – 2019 Physics and Chemistry Video Solutions
Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions
A metallic rod of mass per unit length 0.5 kg/m is lying horizontally on a smooth inclined plane which makes an angle of 30 degree with the horizontal. The rod is not allowed to slide down by a flowing a current through it when a magnetic field of induction 0.25T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is?
20
Aug
A metallic rod of mass per unit length 0.5 kg/m is lying horizontally on a smooth inclined plane which makes an angle of 30 degree with the horizontal. The rod is not allowed to slide down by a flowing a current through it when a magnetic field of induction 0.25T is acting on it in [...]
A coil of 800 turns effective area 0.05m^2 is kept perpendicular to a magnetic field 5×10^−5 T. When the plane of the coil is rotated by 90 degree around any of its co-planar axis in 0.1 s, the emf induced in the coil will be
20
Aug
A coil of 800 turns effective area 0.05m^2 is kept perpendicular to a magnetic field 5×10^−5 T. When the plane of the coil is rotated by 90 degree around any of its co-planar axis in 0.1 s, the emf induced in the coil will be A coil of 800 turns effective area 0.05m^2 is kept [...]
A circuit when connected to an AC source of 12 V gives a current of 0.2 A. The same circuit when connected to a DC source of 12 V, gives a current of 0.4 A. The circuit is
20
Aug
A circuit when connected to an AC source of 12 V gives a current of 0.2 A. The same circuit when connected to a DC source of 12 V, gives a current of 0.4 A. The circuit is A circuit when connected to an AC source of 12 V gives a current of 0.2 A. [...]
In which of the following devices, the eddy current effect is not used ?
20
Aug
In which of the following devices, the eddy current effect is not used ? In which of the following devices the eddy current effect is not used ? August 20, 2020 Category: Chapter 27 - Alternating Current , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
A series R-C circuit is connected to an alternating voltage source. Consider two situation
20
Aug
A series R-C circuit is connected to an alternating voltage source. Consider two situation A series R-C circuit is connected to an alternating voltage source. Consider two situation August 20, 2020 Category: Chapter 27 - Alternating Current , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The core of any transformer is laminated because
19
Aug
The core of any transformer is laminated because The core of any transformer is laminated because August 19, 2020 Category: Chapter 27 - Alternating Current , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux ϕ linked with the primary coil is given by ϕ=ϕ0+4t, where ϕ is in weber, t is time in seconds and ϕ0 is a constant. The output voltage across the secondary coil is
19
Aug
The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux ϕ linked with the primary coil is given by ϕ=ϕ0+4t, where ϕ is in weber, t is time in seconds and ϕ0 is a constant. The output voltage across the secondary coil is t is time in [...]
A transformer is used to light a 100W and 110V lamp from a 220V mains. If the main current is 0.5A, the efficiency of the transformer is approximately
19
Aug
A transformer is used to light a 100W and 110V lamp from a 220V mains. If the main current is 0.5A, the efficiency of the transformer is approximately A transformer is used to light a 100W and 110V lamp from a 220V mains. If the main current is 0.5A the efficiency of the transformer is [...]
A 220 – volt input is supplied to a Transformer. The output circuit draws a current of 2.0 ampere at 440 volts. If the efficiency of the transformer is 80%, the current drawn by the primary windings of the transformer is
19
Aug
A 220 – volt input is supplied to a Transformer. The output circuit draws a current of 2.0 ampere at 440 volts. If the efficiency of the transformer is 80%, the current drawn by the primary windings of the transformer is A 220 - volt input is supplied to a Transformer. The output circuit draws [...]
A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are
19
Aug
A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are A transformer having efficiency of 90% is working on 200 V and 3 kW [...]