Volume 2
In a conductor, if the number of conduction electrons per unit volume is 8.5 × 10^28 m ^–3 and mean free time is 25 fs (femto second), it’s approximate resistivity is : (me = 9.1 × 10^–31 kg)
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Dec
In a conductor, if the number of conduction electrons per unit volume is 8.5 × 10^28 m ^–3 and mean free time is 25 fs (femto second), it’s approximate resistivity is : (me = 9.1 × 10^–31 kg) if the number of conduction electrons per unit volume is 8.5 × 10^28 m ^–3 and mean [...]
Determine the charge on the capacitor in the following circuit :
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Dec
Determine the charge on the capacitor in the following circuit : Determine the charge on the capacitor in the following circuit : December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
In the circuit shown, a four-wire potentiometer is made of a 400cm long wire, which extends between A and B. The resistance per unit length of the potentiometer wire is r=0.01Ω/cm. If an ideal voltmeter is connected as shown with jockey J at 50 cm from end A, the expected reading of the voltmeter will be :-
05
Dec
In the circuit shown, a four-wire potentiometer is made of a 400cm long wire, which extends between A and B. The resistance per unit length of the potentiometer wire is r=0.01Ω/cm. If an ideal voltmeter is connected as shown with jockey J at 50 cm from end A, the expected reading of the voltmeter will [...]
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a four-wire potentiometer is made of a 400cm long wire ,
In the circuit shown ,
the expected reading of the voltmeter will be :- ,
which extends between A and B. The resistance per unit length of the potentiometer wire is r=0.01Ω/cm. If an ideal voltmeter is connected as shown with jockey J at 50 cm from end A ,
A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when :
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Dec
A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when : A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when [...]
In the figure shown, what is the current (in Ampere) drawn from the battery? You are given R1 = 15Ω, R2 = 10Ω, R3 = 20Ω, R4 = 5Ω, R5 = 25Ω, R6 = 30Ω, E = 15V
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Dec
In the figure shown, what is the current (in Ampere) drawn from the battery? You are given R1 = 15Ω, R2 = 10Ω, R3 = 20Ω, R4 = 5Ω, R5 = 25Ω, R6 = 30Ω, E = 15V E = 15V In the figure shown R2 = 10Ω R3 = 20Ω R4 = 5Ω R5 [...]
A 200Ω resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be
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Dec
A 200Ω resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be A 200Ω resistor has a certain color code. If one replaces the red color by green in the code the new resistance will be December 5, 2020 Category: Arihant Physics by [...]
Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner of the polygon is at a distance r from the centre. The field at the centre is
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Dec
Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner of the polygon is at a distance r from the centre. The field at the centre is Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner [...]
A pendulum bob of mass ′ m ′ and charge ′ q ′ is suspended by a thread of length l. The pendulum is placed in a region of a uniform electric field E directed vertically upward. If the electrostatic force acting on the sphere is less than that of gravitational force, the period with which the pendulum oscillates is: (Assume small oscillation).
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Dec
A pendulum bob of mass ′ m ′ and charge ′ q ′ is suspended by a thread of length l. The pendulum is placed in a region of a uniform electric field E directed vertically upward. If the electrostatic force acting on the sphere is less than that of gravitational force, the period with [...]
An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal, in a region of uniform electric field of 5000 N/C vertically upwards. Find the maximum distance covered by an electron in vertical direction above its initial level
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Dec
An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal, in a region of uniform electric field of 5000 N/C vertically upwards. Find the maximum distance covered by an electron in vertical direction above its initial level An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal in a [...]
An electron of mass m and charge e leaves the lower plate of a parallel plate capacitor of length L, with an initial velocity v0 making an angle α with the plate and come out of the capacitor making an angle β to the plate. The electric field intensity between the plates.
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Dec
An electron of mass m and charge e leaves the lower plate of a parallel plate capacitor of length L, with an initial velocity v0 making an angle α with the plate and come out of the capacitor making an angle β to the plate. The electric field intensity between the plates. An electron of [...]