CBSE Class 10 Answered
Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then in parallel in a circuit across the same potential difference. What will be the ratio of heat produced in series and parallel combination?
Asked by adalroshan2464 | 27 Mar, 2019, 04:10: PM
Expert Answer
Let resistance of each wire is R Ω. if two wires are connected in series, then its equivalent resistance is 2R Ω .
If two wires are connected in parallel, then its equivalent resistance is R/2 Ω .
Let Current drawn by series combination = V/2R = i Amps.
Current drawn by parallel combination = V / (R/2) = 4i Amps
Heat produced in series combination = i2 2R = (2i2 R) Watts ......................(1)
Heat produced in parallel combination = 16i2 (R/2) = ( 8i2 R) Watts ......................(2)
From eqn.(1) and (2), we get ratio of heat produced in series combination to heat produced in parallel combination = 1 :4
Answered by Thiyagarajan K | 27 Mar, 2019, 05:04: PM
Application Videos
-
Functions of main parts of human eye ...
This video describe Functions of main parts of human eye. -
Power rating
This video shows the calculation of electricity consumed, electric current ... -
Some other formulae for calculating power ...
This video shows explains the application of formula for calculating the po... -
Cost of electricity
This video describes the calculation of cost of electricity for electrical ... -
Combination of resistors -parallel
This video describes the calculation of effective resistance, total current...
Concept Videos
-
Refraction of Light
Explain refraction of light and define rarer/denser medium, refracted ray,... -
Refraction of Light
Explain the rules for the ray diagram for spherical lenses. Draw ray diagr... -
Refraction of Light
Define convex and concave lenses, optical centre, principle axis, centre o... -
Refraction of Light
Define New Cartesian Sign convention, object/image distance, lens formula,... -
Human Eye
Function of cornea, pupil, iris, eye lens, ciliary muscles, rods & cones. ...
CBSE 10 - Physics
Asked by agankitgupta938 | 18 Apr, 2024, 04:29: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by infinityupgraded | 13 Apr, 2024, 08:17: AM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by suryamr2019 | 08 Mar, 2024, 04:32: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by sheetal.kolte | 04 Mar, 2024, 12:38: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by shrilakshmimunoli | 01 Mar, 2024, 01:15: AM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by khajannirwan | 27 Feb, 2024, 10:20: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by sailakshmi.avinesh | 13 Feb, 2024, 07:03: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by saurabhjd527 | 30 Jan, 2024, 07:55: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by saanviyadla | 24 Jan, 2024, 07:06: PM
ANSWERED BY EXPERT
