Chapter 26 – EMI
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A cycle wheel of radius 0.5 m is rotated with constant velocity of 10 rad/sec in a region of magnetic field of 0.1 T which is perpendicular to the plane of the wheel. The EMF generated between its centre and the rim is
20
Aug
A cycle wheel of radius 0.5 m is rotated with constant velocity of 10 rad/sec in a region of magnetic field of 0.1 T which is perpendicular to the plane of the wheel. The EMF generated between its centre and the rim is A resistance 'R' draws power 'P' when connected to an AC source. [...]
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 cycle wheel of radius 0.5 m is rotated with constant angular velocity of 10 rad/sec in a region of magnetic field of 0.1 T which is perpendicular to the plane of the wheel the emf generated between its centre and the rim is…
19
Aug
A cycle wheel of radius 0.5 m is rotated with constant angular velocity of 10 rad/sec in a region of magnetic field of 0.1 T which is perpendicular to the plane of the wheel the emf generated between its centre and the rim is… A coil of resistance 400 Ω is placed in a magnetic [...]
A long solenoid of diameter 0.1 m has 2×10^4 turns per metre.At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis.The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 10 π^2Ω, the total charge flowing through the coil during this time is.
19
Aug
A long solenoid of diameter 0.1 m has 2×10^4 turns per metre.At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis.The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If [...]
A coil of resistance 400 Ω is placed in a magnetic field. If the magnetic flux ϕ (Wb) linked with the coil varies with time t (sec) as ϕ = 50t2 +4 The current in the coil at t= 2 sec is
19
Aug
A coil of resistance 400 Ω is placed in a magnetic field. If the magnetic flux ϕ (Wb) linked with the coil varies with time t (sec) as ϕ = 50t2 +4 The current in the coil at t= 2 sec is A coil of resistance 400 Ω is placed in a magnetic field. If [...]
A thin semicircular conducting the ring (PQR) of radius ′r′ is falling with its plane vertical in a horizontal magnetic field B, as shown in figure. The potential difference developed across the ring when its speed is v, is
19
Aug
A thin semicircular conducting the ring (PQR) of radius ′r′ is falling with its plane vertical in a horizontal magnetic field B, as shown in figure. The potential difference developed across the ring when its speed is v, is A thin semicircular conducting the ring (PQR) of radius ′r′ is falling with its plane vertical [...]
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when
19
Aug
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when August 19, 2020 Category: Chapter 26 - EMI , [...]
An ac voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to 3Ω, the phase difference between the applied voltage and the current in the circuit is
19
Aug
An ac voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to 3Ω, the phase difference between the applied voltage and the current in the circuit is An ac voltage is applied to a resistance R and an inductor L in series. [...]
A long solenoid has 1000 turns. When a current of 4A flows through it, the magnetic flux linked with each turn of the solenoid is 4×10^−3Wb. The self-inductance of the solenoid is
19
Aug
A long solenoid has 1000 turns. When a current of 4A flows through it, the magnetic flux linked with each turn of the solenoid is 4×10^−3Wb. The self-inductance of the solenoid is A long solenoid has 1000 turns. When a current of 4A flows through it the magnetic flux linked with each turn of the [...]