Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
In the given circuit , what is the current I ( in A ) drawn from battery at time t = 0 .
24
Oct
In the given circuit , what is the current I ( in A ) drawn from battery at time t = 0 . In the given circuit what is the current I ( in A ) drawn from battery at time t = 0 . October 24, 2020 Category: Uncategorised (JEE Advanced Physics by BM [...]
At any instant a current of 2 A is increasing at a rate of 1 A/s through a coil of inductance 2 H. Find the energy ( in SI units ) being stored in the inductor per unit time at that instant.
24
Oct
At any instant a current of 2 A is increasing at a rate of 1 A/s through a coil of inductance 2 H. Find the energy ( in SI units ) being stored in the inductor per unit time at that instant. At any instant a current of 2 A is increasing at a rate [...]
Steel wire of length L at 40 C is suspended from the ceiling and then a mass m is hung from its free end. The wire is cooled down from 40 C to 30 C to regain its original length L.
24
Oct
Steel wire of length L at 40 C is suspended from the ceiling and then a mass m is hung from its free end. The wire is cooled down from 40 C to 30 C to regain its original length L. Steel wire of length L at 40 C is suspended from the ceiling and [...]
Figure shows a circuit having a coil of resistance R = 2.5 Ω and inductance L connected to a conducting rod of radius 10 cm with its center at P.Assume that friction and gravity are absent and a constant uniform magnatic field of 5T exists as shown in figure. At t=0, the circuit is switched on and simultaneously a time-varying external torque is applied on the rod so that it rotates about P with a constant angular velocity 40rads−1. Find the magnitude of this torque (in mNm) when current reaches half of its maximum value. Neglect the self inductance of the loop formed by the circuit.
24
Oct
Figure shows a circuit having a coil of resistance R = 2.5 Ω and inductance L connected to a conducting rod of radius 10 cm with its center at P.Assume that friction and gravity are absent and a constant uniform magnatic field of 5T exists as shown in figure. At t=0, the circuit is switched [...]
A capacitor of capacity 2 μF is charged to a potential difference of 12 V. It is then connected across an inductor of inductance 6μH. What is the current (in A) in the circuit at a time when the potential difference across the capacitor is 6.0 V?
24
Oct
A capacitor of capacity 2 μF is charged to a potential difference of 12 V. It is then connected across an inductor of inductance 6μH. What is the current (in A) in the circuit at a time when the potential difference across the capacitor is 6.0 V? A current of 2 A is increasing at [...]
A long solenoid of diameter 0.1 m has 2 × 10 ^ 4 turns per metre. At the center of the solenoid, a 100-turn coil of radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid is decreased at a constant rate from +2 A to – 2 A in 0.05 s. Find the total charge (in μC) flowing through the coil during this time when the resistance of the coil is 40 π ^ 2 Ω.
24
Oct
A long solenoid of diameter 0.1 m has 2 × 10 ^ 4 turns per metre. At the center of the solenoid, a 100-turn coil of radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid is decreased at a constant rate from +2 A to – [...]
The figure shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuously from 0 to 500 K at a constant rate.
24
Oct
The figure shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuously from 0 to 500 K at a constant rate. The figure shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is [...]
The ends Q and R of two thin wires, PQ and RS, are soldered (joined) together. Initially each of the wires has a length of 1m at 10 C. Now the end P is maintained at 10 C, while the end
24
Oct
The ends Q and R of two thin wires, PQ and RS, are soldered (joined) together. Initially each of the wires has a length of 1m at 10 C. Now the end P is maintained at 10 C, while the end are soldered (joined) together. Initially each of the wires has a length of 1m [...]
A water cooler of storage capacity 120 litres can cool water at constant rate of P watts. In a closed circulation system (as shown schematically in the figure), the water from the cooler
24
Oct
A water cooler of storage capacity 120 litres can cool water at constant rate of P watts. In a closed circulation system (as shown schematically in the figure), the water from the cooler A water cooler of storage capacity 120 litres can cool water at constant rate of P watts. In a closed circulation system [...]
A copper ball of mass 100 g is at a temperature T. It is dropped in a copper calorimeter of mass 100 g, filled with 170 g of water at room temperature. Subsequently, the temperature
24
Oct
A copper ball of mass 100 g is at a temperature T. It is dropped in a copper calorimeter of mass 100 g, filled with 170 g of water at room temperature. Subsequently, the temperature A copper ball of mass 100 g is at a temperature T. It is dropped in a copper calorimeter of [...]