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CBSE Class 12-science Answered

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Asked by amanpanday6384 | 22 Dec, 2022, 12:42: PM
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when baateries are connected in parallel , Then effective EMF Eeff is given as
 
begin mathsize 14px style E subscript e f f end subscript space equals space fraction numerator begin display style sum from blank to blank of E subscript i over r subscript i end style over denominator begin display style sum from blank to blank of 1 over r subscript i end style end fraction space equals space fraction numerator begin display style 18 over 2 end style plus begin display style 12 over 1 end style over denominator begin display style 1 half end style plus begin display style 1 over 1 end style end fraction equals space fraction numerator 21 over denominator begin display style bevelled 3 over 2 end style end fraction space equals space 14 space V end style
Hence voltmeter will show the reading 14 V
Answered by Thiyagarajan K | 22 Dec, 2022, 02:48: PM

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CBSE 12-science - Physics
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Asked by amanpanday6384 | 22 Dec, 2022, 12:42: PM
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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Asked by arushidabhade | 30 Jul, 2020, 10:34: PM
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CBSE 12-science - Physics
You are given 48 cells each of 1.48 volt and resistance 0.3 ohm. How would you arrange them to produce greatest current in a circuit of 5 ohm resistance?
Asked by mridulabarua05 | 06 Feb, 2019, 09:53: AM
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CBSE 12-science - Physics
Why we use a combination of cells?
Asked by Topperlearning User | 27 Apr, 2015, 01:12: PM
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CBSE 12-science - Physics
For the series combination of cells, derive the condition in which the current through externally connected resistance is maximum.
Asked by Topperlearning User | 24 Apr, 2015, 03:36: PM
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CBSE 12-science - Physics
Three identical cells, each of emf 2 V and internal resistance 0.2 ohm are connected in series to an external resistor of 5.4 ohm. Calculate the current in the circuit.
Asked by Topperlearning User | 24 Apr, 2015, 03:37: PM
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CBSE 12-science - Physics
In given circuit the cells E1 and E2 have emfs 4 V and 8 V and the internal resistance 0.5 ohm and 10 ohm respectively. Calculate the current in each resistance.
Asked by Topperlearning User | 24 Apr, 2015, 03:47: PM
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CBSE 12-science - Physics
In the circuit shown, each battery is of 5 V and has internal resistance of 0.2 ohm. What will be the reading of an ideal voltmeter connecting across the battery?
Asked by Topperlearning User | 24 Apr, 2015, 03:51: PM
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CBSE 12-science - Physics
In which condition, the cells connected in parallel has maximum current?
Asked by Topperlearning User | 24 Apr, 2015, 03:52: PM
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