A circuit consisting of five resistors each of resistance R, forming a Wheatstone bridge. What is the equivalent resistance of the circuit?
The bridge is in balanced condition because the four arms have equal resistances. Thus the bridge resistance can be ignored and we have two parallel branches each of resistance 2R, so the effective resistance is R.
Four resistances of $$15\Omega, \, 12\Omega, \, 4\Omega$$ and $$10 \Omega$$ respectively in cyclic order to form Wheatstone's network. The resistance that is to be connected in parallel with the resistance of $$10\Omega$$ to balance the network is _______ $$\Omega$$.
In a Wheatstone bridge (see fig.), Resistances P and Q are approximately equal. When $$R = 400 \Omega$$, the bridge is equal. When $$R = 400 \Omega$$,the bridge is balanced. On inter-changing $$P$$ and $$Q$$, the value of $$R$$, for balance, is$$ 405\Omega$$. The value of X is close to :
The resistances of the four arms P, Q, R and S in a Wheatstone's bridge are 10 ohm, 30 ohm, 30 ohm and 90 ohm, respectively. The e.m.f. and internal resistance of the cell are 7 volt and 5 ohm respectively. If the galvanometer resistance is 50 ohm, the current drawn from the cell will be
In the following circuit, the current through the resistor $$R (= 2 \Omega)$$ is $$I$$ Amperes. The value of $$I$$ is
For the resistance network shown in the figure, choose the correct option(s).
In Wheatstone bridge, $$4$$ resistors $$P=10\Omega, Q=5\Omega, R=4\Omega, S=4\Omega$$ are connected in cyclic order. To ensure no current through galvanometer
Four resistance of $$10\Omega$$, $$60\Omega$$, $$100\Omega$$ and $$ 200\Omega$$ respectively taken in order are used to form a Wheatstone's bridge. A $$15 V$$ battery is connected to the ends of a $$200\Omega $$ resistance, the current through it will be
In the following network, the current flowing through $$15 ohm$$ resistance is
The current in $$1\Omega$$ resistor in the following circuit is?
The potentiometer wire $$A B$$ shown in figure is 40 cm long. Where should the free end of the galvanometer be connected on $$A B$$ so that the galvanometer may show zero deflection?