In the circuit shown here, what is the value of the unknown resistor R so that the total resistance of the circuit between points P and Q is also equal to R
(1) 3 ohms
(2)
(3)
(4) 10 ohms
Find the equivalent resistance between the points a and b
(1) 2 Ω
(2) 4 Ω
(3) 8 Ω
(4) 16 Ω
The potential difference between points A and B is:
1. 207 V
2. 407 V
3. 107 V
4. 0
In the circuit shown in the figure, the current flowing in 2 Ω resistance
(1) 1.4 A
(2) 1.2 A
(3) 0.4 A
(4) 1.0 A
In the figure given the value of X resistance will be, when the p.d. between B and D is zero
(1) 4 ohm
(2) 6 ohm
(3) 8 ohm
(4) 9 ohm
Five resistors of given values are connected together as shown in the figure. The current in the arm BD will be
(1) Half the current in the arm ABC
(2) Zero
(3) Twice the current in the arm ABC
(4) Four times the current in the arm ABC
In the network shown in the figure, each of the resistance is equal to 2 Ω. The resistance between the points A and B is
(1) 1 Ω
(2) 4 Ω
(3) 3 Ω
(4) 2 Ω
In the arrangement of resistances shown below, the effective resistance between points A and B is
(1) 20 Ω
(2) 30 Ω
(3) 90 Ω
(4) 110 Ω
In the Wheatstone's bridge shown, P = 2 Ω, Q = 3 Ω, R = 6 Ω and S = 8 Ω. In order to obtain balance, shunt resistance across 'S' must be [SCRA 1998]
(1) 2 Ω
(2) 3 Ω
(3) 6 Ω
(4) 8 Ω
For what value of unknown resistance X, the potential difference between B and D will be zero in the circuit shown in the figure
(1) 4 Ω
(2) 6 Ω
(3) 2 Ω
(4) 5 Ω