CapacitanceHard
Question
A conducting wire of length l and mass m can slide without friction on two parallel rails and is connected to capacitance C. Whole system lies in a magnetic field B and a constant force F is applied to the rod. Then
Options
A.The rod moves with constant velocity
B.the rod moves with constant acceleration
C.there is constant charge on the capacitor.
D.charge on the capacitor increases with time
Solution
Let velocity of wire at time t is v, then
ε = Bvl
q = Cε, i =
= CBla
Fm = ilB
F - Fm = ma
ε = Bvl
q = Cε, i =
= CBlaFm = ilB
F - Fm = ma
Create a free account to view solution
View Solution FreeMore Capacitance Questions
In the adjoining circuit, the capacity between the points A and B will be -...Three capacitor 2μF, 3μF and 6μF are connected in series with 10 volt battery then charge on 3μF cap...In the given circuit if point C is connected to the earth and a potential of + 2000 V is given to point A, the potential...A 10 mF capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parall...Two thin dielectric slabs of dielectric constants K2 and K2 (K1 2) are inserted between plates of a parallel plate capac...