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
Resistances $$10\Omega$$, $$60\Omega$$ and $$100\Omega$$ are in series and they together are in parallel to $$200\Omega$$ resistance. When a potential difference of $$15 V$$ is applied across $$200\Omega$$ then current through it
$$I=\dfrac { 15 }{ 200 } =7.5\times { 10 }^{ -2 }A$$
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).
A circuit consisting of five resistors each of resistance R, forming a Wheatstone bridge. What is the equivalent resistance of the circuit?
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
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?