Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent resistivity of the combination is

Question

Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent resistivity of the combination is

Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent resistivity of the combination is
A. `(rho_(1)+rho_(2))/(2)`
B. `rho_(1)+rho_(2)`
C. `2(rho_(1)+rho_(2))`
D. `sqrt(rho_(1)rho_(2))`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

A student has two wires of iron and copper of equal length and diameter. He first joins two wires in series and passes an electric current through the

2 Answers 4 Views

Two circular disc of same mass and thickness are made from metals having densities `rho_(1)` and `rho_(2)` respectively. The ratio of their moment of

2 Answers 4 Views

Two circular discs A and B have equal masses and uniform thickness but have densities `rho_(1)` and `rho_(2)` such that `rho_(1)gt rho_(2)` . Their mo

2 Answers 4 Views

Two discs have same mass and thickness. Their materials are of densities `rho_(1)` and `rho_(2)` . The ratio of their moment of inertia about central

2 Answers 6 Views

Two disc has same mass rotates about the same axis with their densities `rho_(1)` and `rho_(2)` respectively such that `(rho_(1)gt rho_(2))`, then the

2 Answers 4 Views

Two wires of same material and length are stretched by the same force. If the ratio of radii of the two wires in `n:1` then the ratio of their elongat

2 Answers 5 Views

A 100 volt battery is connected across the series combination of the two capacitors of `4muF and 8muF`. The energy stored in the series combination is

2 Answers 4 Views

When two capacitors are connected in series, the equivalent capacitance is `1.2muF`. When they are connected in parallel, the equivalent capacitance i

2 Answers 4 Views

Two wires of the same metal have same length, but their cross-sections are in the ratio 3:1 . They are joined in series. The resistance of thicker wir

2 Answers 6 Views

Two metal wires of identical dimesnios are connected in series. If `sigma_(1)` and `sigma_(2)` are the conducties of the metal wires respectively, the

2 Answers 5 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
The effective resistance of combined wire
`R=R_(1)+R_(2)`
`rho ((l+l)/(A))=(rho_(1)l)/(A)+(rho_(2)l)/(A) " "[because " total length " L=l+l]`
or `rho=(rho_(1)+rho_(2))/(2)`

4 views Answered 2023-02-05 15:29