EASY
Earn 100

In the figure shown, segments AB, BC, CD and DA, as well as the diagonal segments AC and BD have a resistance 2Ω each. The mid points of the diagonal wires are soldered with each other. If the effective resistance between the mid points of sides AD and CD is x4Ω, find the value of x.

Question Image

50% studentsanswered this correctly

Important Questions on Current Electricity

EASY
A battery of 3.0 V is connected to a resistor dissipating 0.5 W of power. If the terminal voltage of the battery is 2.5 V, the power dissipated within the internal resistance is:
EASY
Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 volts and the average resistance per km is 0.5 Ω. The power loss in the wire is:
HARD

Each resistance in the given cubical network has resistance of 1Ω and equivalent resistance between A and B is

Question Image

MEDIUM
Equivalent resistance between points A and B in the adjacent circuit is

Question Image
MEDIUM
The current I1 (in A ) flowing through 1Ω resistor in the following circuit is:
Question Image
EASY

A dc source with internal resistance R0 is connected to three identical resistors each of resistance R as shown in the figure. If the thermal power generated in the circuit is highest, then

Question Image

EASY

Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance.
The ratio of power consumption by the bulbs when i all are glowing and ii in the situation when two from section A and one from section B are glowing will be, 
Question Image

EASY
A wire of resistance R is bent to form a square ABCD as shown in the figure. The effective resistance between E and C is:
( E is mid-point of arm CD )
Question Image
MEDIUM
Two wires of equal diameters, lengths l1,l2 and having resistivities S1,S2 respectively are joined in series. The equivalent resistivity of the combination is ____
HARD
Question Image
A 9 V battery with an internal resistance of 0.5 Ω is connected across an infinite network, as shown in the figure. All ammeters A1, A2, A3 and voltmeter V are ideal.
Choose the correct statement.
MEDIUM

Thirteen resistors each of resistance R are connected in the circuit as shown in the following figure. Net resistance between A and B is

Question Image

MEDIUM

The equivalent resistance between A and B for the mesh shown in the figure is

Question Image

MEDIUM

A and B are two points on a uniform ring of resistance 19 Ω. The angle AOB=45°. The equivalent resistance between A and B is

Question Image

HARD

Question Image​​​​​​​
What will be the equivalent resistance between the terminals A and B of the infinite resistive network shown in the figure ?

MEDIUM
Four resistors, 100 Ω, 200 Ω, 300 Ω and 400 Ω are connected to form four sides of a square. The resistors can be connected in any order. What is the maximum possible equivalent resistance across the diagonal of the square?
HARD
A metal wire of resistance 3Ω is elongated to make a uniform wire of double its previous length. This new wire is now bent and the ends joined to make a circle. If two points on this circle make an angle 60o at the center, the equivalent resistance between these two points will be:
HARD
The figure shows three circuits I, II and III which are connected to a 3 V battery. If the powers dissipated by the configurations I, II and III are P1, P2 and P3 respectively, then -

Question Image
EASY
A uniform metallic wire has a resistance of 18 Ω and is bent into an equilateral triangle. Then, the resistance between any two vertices of the triangle is: