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A thin wire AC shaped as a semi-circle of diameter d rotates with a constant angular frequency (ω) in a uniform magnetic field of indcution B. The vector ω is parallel to B and the rotation axis XY passes through the end A of the wire and is perpendicular to the diameter AC (see Fig.). B is directed left to right in the plane of the paper. The value of the line intergral I = ∫E ⋅dr taken along the wire form the point A to the point C will be ωBd2/ ?. What integer should be inserted in place of question mark.
21
Oct
A thin wire AC shaped as a semi-circle of diameter d rotates with a constant angular frequency (ω) in a uniform magnetic field of indcution B. The vector ω is parallel to B and the rotation axis XY passes through the end A of the wire and is perpendicular to the diameter AC (see Fig.). [...]
A conducting rod of mass 200 gm and length 10 cm can slide without friction on two long, horizontal rails. A uniform magnetic field of magnitude 5 m T exists in the region as shown. A source S is used to maintain a constant current 2 A through the rod. If motion of the rod starts from the rest, find its speed (in cm/s) after 10 s from the start of the motion
21
Oct
A conducting rod of mass 200 gm and length 10 cm can slide without friction on two long, horizontal rails. A uniform magnetic field of magnitude 5 m T exists in the region as shown. A source S is used to maintain a constant current 2 A through the rod. If motion of the rod [...]
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A conducting rod of mass 200 gm and length 10 cm can slide without friction on two long ,
an induced current is developed in it ,
Some magnetic flux is changed from a coil of resistance 10Ω. As a result ,
which varies with time as shown in figure. Find the magnitude of the change in flux through the coil in weber. ,
A uniform magnetic field B = 0.5 T exists in a circular region of radius R = 5 m. A loop of radius R=5m encloses the magnetic field at t = 0 and then pulled at uniform speed v = 2 m/s In the plane of the paper. Find the induced emf (in V) in the loop at time t = 3 s.
21
Oct
A uniform magnetic field B = 0.5 T exists in a circular region of radius R = 5 m. A loop of radius R=5m encloses the magnetic field at t = 0 and then pulled at uniform speed v = 2 m/s In the plane of the paper. Find the induced emf (in V) in [...]
A semiconductor is known to have an electron concentration of 8 * 10^12/cm^3 and hole concentration of 5 * 10^12/cm^3. The semiconductor is
21
Oct
A semiconductor is known to have an electron concentration of 8 * 10^12/cm^3 and hole concentration of 5 * 10^12/cm^3. The semiconductor is A semiconductor is known to have an electron concentration of 8 * 10^12/cm^3 and hole concentration of 5 * 10^12/cm^3. The semiconductor is October 21, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
In Fig. ABCD is a fixed smooth conducting frame in horizontal plane. T is bulb of power 100 W,P is a smooth pulley and OQ is a conducting rod. Neglect the self-inductance of the loop and resistance of any part other than the bulb. The mass M is moving down with constant velocity 10 m/s. Bulb lights at its rated power due to induced emf in the loop due to earth’s magnetic field. Find the mass M (in kg) of teh block. (g = 10 ms^(2)`
21
Oct
In Fig. ABCD is a fixed smooth conducting frame in horizontal plane. T is bulb of power 100 W,P is a smooth pulley and OQ is a conducting rod. Neglect the self-inductance of the loop and resistance of any part other than the bulb. The mass M is moving down with constant velocity 10 m/s. [...]
Tags:
an induced current is developed in it ,
In Fig. ABCD is a fixed smooth conducting frame in horizontal plane. T is bulb of power 100 W ,
Some magnetic flux is changed from a coil of resistance 10Ω. As a result ,
which varies with time as shown in figure. Find the magnitude of the change in flux through the coil in weber. ,
A pure semiconductor has equal electron and hole concentration of 10^16 m^-3. Doping by Indium increases nh to 4.5 * 10^22 m^-3. What is ne in the doped semiconductor ?
21
Oct
A pure semiconductor has equal electron and hole concentration of 10^16 m^-3. Doping by Indium increases nh to 4.5 * 10^22 m^-3. What is ne in the doped semiconductor ? A pure semiconductor has equal electron and hole concentration of 10^16 m^-3. Doping by Indium increases nh to 4.5 * 10^22 m^-3. What is ne [...]
A piece of copper and the other of germanium are cooled from the room temperature to 80 K. Then which of the following would be a correct statement ?
21
Oct
A piece of copper and the other of germanium are cooled from the room temperature to 80 K. Then which of the following would be a correct statement ? A piece of copper and the other of germanium are cooled from the room temperature to 80 K. Then which of the following would be a [...]
A simple pendulum of length 1m has bob of mass 100 g. It is displaced through an angle of 60^∘ from the vertical and then released. The kinetic energy of bob when it passes through the mean position is
21
Oct
A simple pendulum of length 1m has bob of mass 100 g. It is displaced through an angle of 60^∘ from the vertical and then released. The kinetic energy of bob when it passes through the mean position is Work done from d = 0 m to d = 3 m October 21, 2020 Category: [...]
The figure shown a particle sliding on a frictionless track, which terminates in a straight horizontal section. If the particle starts slipping from the point A, how far away from the track will the particle hit the ground?
21
Oct
The figure shown a particle sliding on a frictionless track, which terminates in a straight horizontal section. If the particle starts slipping from the point A, how far away from the track will the particle hit the ground? how far away from the track will the particle hit the ground? The figure shown a particle [...]
Sketch the output waveform from an AND gate for the inputs A and B shown in figure.
21
Oct
Sketch the output waveform from an AND gate for the inputs A and B shown in figure. Sketch the output waveform from an AND gate for the inputs A and B shown in figure. October 21, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,