Current Electri...

Two wires of the same material and equal length are joined in parallel combination. If one of them has half the thickness of the other and the thinner wire has a resistance of 8 ohms, the resistance of the combination is equal to

A uniform wire of resistance 9Ω is cut into 3 equal parts. They are connected in the form of equilateral triangle ABC. A cell of e.m.f. 2 V and negligible internal resistance is connected across B and C. Potential difference across AB is

Out of five resistances of resistance R Ω. each 3 are connected in parallel and are joined to the rest 2 inseries. Find the resultant resistance

In the circuit shown, if a conducting wire is connected between point A and B, the current in this wire will

In the circuit, the potential difference across PQ will be nearest to

Three resistors are connected to form the sides of a triangle ABC, the resistance of the sides AB, BC and CA are 40 ohm, 60 ohm and 100 ohm respectively. The effective resistance between the points A and B in ohm will be

Two wires of the same dimensions but resistivitiesρ₁ and ρ₂ are connected in series. The equivalent resistivity of the combination is

Three unequal resistors in parallel are equivalent to a resistance 1 ohm. If two of them are in the ratio 1 : 2 and if no resistance value is fractional, the largest of the three resistances in ohm is

A 3 volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be