Student Login

Home›Chapters›Current Electricity PYQs›Wheatstone Bridge & Metre Bridge›Question 7

MHT CET 2026 (15 May, Shift 2) · Wheatstone Bridge & Metre Bridge

Wheatstone Bridge & Metre Bridge question from MHT CET 2026 (15 May, Shift 2)

Q7MHT CET 2026 · 15 MAY · SHIFT 2Medium

Wheatstone Bridge & Metre Bridge

Two wires $A$ and $B$ of equal lengths are connected in left and right gap of a metre bridge, null point is obtained at $40$ cm from left end. Diameters of the wires $A$ and $B$ are in the ratio $3 : 1$ . The ratio of specific resistance of $A$ to that of $B$ is

Show answer and solution

Answer: (c)

$\dfrac{R_A}{R_B} = \dfrac{40}{60} = \dfrac{2}{3}$
$R = \dfrac{\rho L}{\pi d^2/4}$ , equal $L$ : $\dfrac{\rho_A}{\rho_B} = \dfrac{R_A}{R_B} \cdot \dfrac{d_A^2}{d_B^2}$
$\dfrac{\rho_A}{\rho_B} = \dfrac{2}{3} \times 9 = 6$
So the answer is (c) $6 : 1$ .

Report a mistake

More questions on Wheatstone Bridge & Metre Bridge

With resistance x in the left gap and resistance 9 Ω in right gap of a meter bridge, the…MHT CET 2026 (15 May, Shift 1)
In balanced meter bridge, the resistance of bridge wire is 0.1 Ω/ cm. Unknown resistance…MHT CET 2026 (14 May, Shift 2)
The resistances in two arms of the metre bridge are 5 Ω and R Ω respectively, null point…MHT CET 2026 (13 May, Shift 1)
The resistances in the two gaps of a balanced meter bridge are 'X' Ω and '3X' Ω…MHT CET 2026 (19 Apr, Shift 2)
In a meter bridge experiment, the balance point is obtained at length ' l₁ ' cm from left…MHT CET 2026 (19 Apr, Shift 1)
Two wires A and B of equal lengths are connected in left and right gap respectively of a…MHT CET 2026 (13 Apr, Shift 1)
In a metre bridge experiment (see figure), the positions of the cell, E, and…NEET 2026
Two resistors 2 Ω and 3 Ω are connected in the gaps of bridge as shown in figure. The…JEE Main 2026 (24 Jan, Shift 1)