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The volt-ampere characteristic of a silicon diode is shown in figure. Determine the resistance of the diode at (1) ID = 20 mA and (2) VD = -10 V.
20
Oct
The volt-ampere characteristic of a silicon diode is shown in figure. Determine the resistance of the diode at (1) ID = 20 mA and (2) VD = -10 V. The volt-ampere characteristic of a silicon diode is shown in figure. Determine the resistance of the diode at (1) ID = 20 mA and (2) VD [...]
When a forward bias is applied to a p-n junction, it : (a) raises the potential barrier (b) reduces the majority carrier current to zero.
20
Oct
When a forward bias is applied to a p-n junction, it : (a) raises the potential barrier (b) reduces the majority carrier current to zero. it : (a) raises the potential barrier (b) reduces the majority carrier current to zero. When a forward bias is applied to a p-n junction October 20, 2020 Category: Uncategorised [...]
A rod closing the circuit shown in Fig moves along a U shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to the plane. Calculate F if the rate of heat generation in the circuit is Q.
20
Oct
A rod closing the circuit shown in Fig moves along a U shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to the plane. Calculate F if the rate of heat generation in the circuit is Q. -q A metallic square [...]
Two infinitely long conducting parallel rails are connected through a capacitor C as shown in Fig. A conductor of length l is moved with constant speed v0. Which of the following graph truly depicts the variation of current through the conductor with time?
20
Oct
Two infinitely long conducting parallel rails are connected through a capacitor C as shown in Fig. A conductor of length l is moved with constant speed v0. Which of the following graph truly depicts the variation of current through the conductor with time? -q A metallic square loop PQRS is moving in its own plane [...]
Figure shows a smooth vertical circular track AB of radius R. A block slides along the surface AB when it is given a velocity equal to 6gR−−−−√ at point A. The ratio of the force exerted by the track on the block at point A to that at point B is
20
Oct
Figure shows a smooth vertical circular track AB of radius R. A block slides along the surface AB when it is given a velocity equal to 6gR−−−−√ at point A. The ratio of the force exerted by the track on the block at point A to that at point B is A person of mass [...]
In the circuit shown in Fig. A conducting wire HE is moved with a constant speed v towards left. The complete circuit is placed in a uniform magnetic field B perpendicular to the plane of circuit inwards. The current in HKDE is
20
Oct
In the circuit shown in Fig. A conducting wire HE is moved with a constant speed v towards left. The complete circuit is placed in a uniform magnetic field B perpendicular to the plane of circuit inwards. The current in HKDE is -q A metallic square loop PQRS is moving in its own plane with [...]
A small sphere is given vertical velocity of magnitude v0 = 5 ms^−1 and it swings in a vertical plane about the end of a massless string. The angle θ with the vertical at which string will break, knowing that it can withstand a maximum tension equal to twice the weight of the sphere, is
20
Oct
A small sphere is given vertical velocity of magnitude v0 = 5 ms^−1 and it swings in a vertical plane about the end of a massless string. The angle θ with the vertical at which string will break, knowing that it can withstand a maximum tension equal to twice the weight of the sphere, is [...]
A bead of mass 1/2 kg starts from rest from A to move in a vertical plane along a smooth fixed quarter ring of radius 5 m, under the action of a constant horizontal force F = 5 N as shown in Fig. The speed of bead as it reaches point B is
20
Oct
A bead of mass 1/2 kg starts from rest from A to move in a vertical plane along a smooth fixed quarter ring of radius 5 m, under the action of a constant horizontal force F = 5 N as shown in Fig. The speed of bead as it reaches point B is A bead [...]
Two bodies of masses m and 4 m are attached to a light string as shown in figure. A body of mass m hanging from string is executing oscillations with angular amplitude 60^∘, while other body is at rest on a horizontal surface. The minimum coefficient of friction between mass 4m and the horizontal surface is (here pulley is light and smooth)
20
Oct
Two bodies of masses m and 4 m are attached to a light string as shown in figure. A body of mass m hanging from string is executing oscillations with angular amplitude 60^∘, while other body is at rest on a horizontal surface. The minimum coefficient of friction between mass 4m and the horizontal surface [...]
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Two bodies of masses m and 4 m are attached to a light string as shown in figure. A body of mass m hanging from string is executing oscillations with angular amplitude 60^∘ ,
while other body is at rest on a horizontal surface. The minimum coefficient of friction between mass 4m and the horizontal surface is (here pulley is light and smooth) ,
A bead of mass m is released from rest at A to move along the fixed smooth circular track as shown in figure. The ratio of magnitudes of centripetal force and normal reaction by the track on the bead at any point P0 described by the angle θ(≠0) would
20
Oct
A bead of mass m is released from rest at A to move along the fixed smooth circular track as shown in figure. The ratio of magnitudes of centripetal force and normal reaction by the track on the bead at any point P0 described by the angle θ(≠0) would A person of mass 70kg jumps [...]