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If n identical drops of mercury are combined to form a bigger drop then the capacity of bigger drop, if capacity of each drop of mercury is C, is?
03
Dec
If n identical drops of mercury are combined to form a bigger drop then the capacity of bigger drop, if capacity of each drop of mercury is C, is? if capacity of each drop of mercury is C If n identical drops of mercury are combined to form a bigger drop then the capacity of [...]
The ratio of capacitance of two capacitors filled with dielectrics of same dimensions but of different values K and K/4 arranged in two ways as shown in figure(i) and (ii), is?
03
Dec
The ratio of capacitance of two capacitors filled with dielectrics of same dimensions but of different values K and K/4 arranged in two ways as shown in figure(i) and (ii), is? is The ratio of capacitance of two capacitors filled with dielectrics of same dimensions but of different values K and K/4 arranged in two [...]
The power consumed by the combination, when three electric lamps of 40W, 60W and 100W are connected in parallel, is?
03
Dec
The power consumed by the combination, when three electric lamps of 40W, 60W and 100W are connected in parallel, is? 60W and 100W are connected in parallel is The power consumed by the combination when three electric lamps of 40W December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity [...]
A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is?
03
Dec
A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is? A lamp having tungsten filament consumes 50 W. [...]
A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum, is?
03
Dec
A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum, is? A battery of emf E is connected across the circuit. The value of R for which heat generated in the circuit is maximum is December 3, 2020 Category: Arihant Physics by [...]
Three concentric metallic spherical shells of radii R, 2R, 3R, are given charges Q1, Q2, Q3, respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, Q1:Q2:Q3, is
01
Dec
Three concentric metallic spherical shells of radii R, 2R, 3R, are given charges Q1, Q2, Q3, respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, Q1:Q2:Q3, is 2r 3R are given charges Q1 is Q1:Q2:Q3 q2 [...]
Four electric charges +q, +q, −q and −q are placed at the corners of a square of side 2L (see figure). The electric potential at point A, midway between the two charges +q and +q, is
01
Dec
Four electric charges +q, +q, −q and −q are placed at the corners of a square of side 2L (see figure). The electric potential at point A, midway between the two charges +q and +q, is -q −q and −q are placed at the corners of a square of side 2L (see figure). The electric [...]
n identical cells, each of emf ℰ and internal resistance r, are joined in series to form a closed circuit. One cell (A) is joined with reversed polarity. The potential difference across each cell, except A, is
01
Dec
n identical cells, each of emf ℰ and internal resistance r, are joined in series to form a closed circuit. One cell (A) is joined with reversed polarity. The potential difference across each cell, except A, is are joined in series to form a closed circuit. One cell (A) is joined with reversed polarity. The [...]
Two identical charged spheres suspended from a common point by two massless strings of lengths l, are initially at a distance d (d much less than l ) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between them, is
30
Nov
Two identical charged spheres suspended from a common point by two massless strings of lengths l, are initially at a distance d (d much less than l ) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other [...]
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are initially at a distance d (d much less than l ) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result ,
is ,
the spheres approach each other with a velocity v. Then v varies as a function of the distance x between them ,
Two identical charged spheres suspended from a common point by two massless strings of lengths l ,
Let the moment of inertia of a hollow cylinder of length 30 cm (inner radius 10 cm and outer radius 20 cm), about its axis be I. The radius of a thin cylinder of the same mass such that its moment of inertia about its axis is also I, is:
29
Nov
Let the moment of inertia of a hollow cylinder of length 30 cm (inner radius 10 cm and outer radius 20 cm), about its axis be I. The radius of a thin cylinder of the same mass such that its moment of inertia about its axis is also I, is: about its axis be I. [...]