A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is
Sahay Sir > Question Answers > A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is
A parallel plate capacitor with air between the plates has capacitance of 9pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k1=3 and thickness d3 while the other one has dielectric constant k2=6 and thickness 2d/3. Capacitance of the capacitor is now
05
Dec
A parallel plate capacitor with air between the plates has capacitance of 9pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k1=3 and thickness d3 while the other one has dielectric constant k2=6 and thickness 2d/3. Capacitance of [...]
Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t is the time taken for the energy stored in the capacitor to be reduced to half its initial value and t2 is the time taken for the charge to reduce to one fourth its initial value Then the ratio t1/t2 will be
05
Dec
Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t is the time taken for the energy stored in the capacitor to be reduced to half its initial value and t2 is the time taken for the charge to reduce to one fourth its initial value Then the ratio t1/t2 [...]
A resistor ‘R’ and 2(μ)F capacitor in series is connected through a switch to 200 V direct supply. A cross the capacitor is a neon bulb that lights up at 120 V. Calculate the value of R to make the bulb light up 5 s after the switch has been closed. (log10 2.5=0.4)
05
Dec
A resistor ‘R’ and 2(μ)F capacitor in series is connected through a switch to 200 V direct supply. A cross the capacitor is a neon bulb that lights up at 120 V. Calculate the value of R to make the bulb light up 5 s after the switch has been closed. (log10 2.5=0.4) A charge [...]
Two identical charged spheres suspended from a common point by two mass-less strings of length l are initially at a distance d ( d much less then l) apart because of their mutual repulsion . The charge begins to leak from both the spheres at a constant rate. As a result the charge approach each other with a velocity v. Then as a function of distance x between them .
05
Dec
Two identical charged spheres suspended from a common point by two mass-less strings of length l are initially at a distance d ( d much less then l) apart because of their mutual repulsion . The charge begins to leak from both the spheres at a constant rate. As a result the charge approach each [...]
A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is
05
Dec
A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The [...]