Related InterviewSolutions

• An accumulator battery (storage cell) `B` of emf `epsilon` and internal resistance `r` is being charged from `DC` supply whose terminals are `T_1` and `T_2` .A. Potential difference bertween `T_(1)` and `T_(2)` must be `gt varepsilon`B. `T_(1)` must be positive with respect to `T_(2)`C. in the battery, current flows from the positive to the negative terminal.D. All the above options are incorrect.
• Capacitors `C_(1)=1 muF` and `C_(2)=2muF` are separately charged from the same battery. They are allowed to discharge separately through equal resistorsA. The currents in the two discharging circuits at `t=0` is zeroB. The currents in te two discharging circuits at `t=0` are equal but not zero.C. The currents in the two discharging circuits at `t=0` are unequal.D. `C_(1)` loses `50%` of its initial charge sooner than `C_(2)` loses `50%` of its initial charge.
• A milliammeter of range of `10 mA` gives full-scale deflection for a current of `100 mA`, when a shunt of `0.1 Omega` is connected in parallel to it. The coil of the milliammeter has a resistance of.A. `0.9Omega`B. `1 Omega`C. `1.1 Omega`D. `0.11 Omega`
• A cell drives a current through a circuit. The emf of the cell of equal to the work done in moving unit charge (Choose the incorrect option)A. from the positive to the negative plate of the cellB. from the positive plate, back to the positive plateC. from the negative plate, back to the negative plateD. from any point in the circuit back to the same point
• In the network shown below, the equivalent resistance between `A` and `B` is A. `R//2`B. `R`C. `2R`D. `4R`
• `A` and `B` are two points on a uniform ring of resistance `R` the `/_ASCB=theta`, whre `C` is the centre of the sign. The equivalent reisrtance between `A` and `b`A. `R/(4pi^(2))(2pi-theta)theta`B. `R(I-(theta)/(2pi))`C. `R (theta)/(2pi)`D. `R(2pi-theta)/(4pi)`
• In the network shown, each resistance is equal to `R`. The equivalent resistance between diagonally opposite corners isA. `R`B. `R//3`C. `2R//3`D. `4R//3`
• In the network shown in figure, the ring has zero resistance. Find the resistance between A and B. A. `2R`B. `4R`C. `7R`D. `10R`
• The two ends of a uniform conductor are joined to a cell of e.m.f. `E` and some internal resistance. Starting from the midpoint `P` of the conductor, we move in the direction of current and return to `P`. The potential `V` at every point on the path is plotted against the distance covered `(x)`. which of the following graphs best represent the resulting curve ?A. B. C. D.
• The Wheatstone bridge shown in the above figure is balanced. If the positions of the cell `C` and the galvanometer `G` are now interchanged, `G` will show zero deflectionA. in all casesB. only if all the resistances are qualC. only if `R_(1)=R_(3)` and `R_(2)=R_(4)`D. only if `R_(1)//R_(3)=R_(2)//R_(4)`