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CBSE Class 12-science Answered

Can you please provide me the derivation for wheatstone bridge [R1/R2 = R3/R4] .......
Tomorrow I have my exams..........
Asked by pksunilnair | 19 Oct, 2017, 07:39: PM
answered-by-expert Expert Answer
Please refer to the URL here https://goo.gl/9pLHC9
Answered by | 20 Oct, 2017, 09:46: AM

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Asked by guptakartikgupta2 | 16 Jul, 2022, 05:23: PM
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CBSE 12-science - Physics
in Current electricity, in section batteries and EMF, we studied that,in a battery a internal mechanism exerts forces on the charges of battery... sir can you please explain, how this force drives the charge in a battery and why these forces drive charges in that manner? please explain sir..
Asked by yashrajgharte24.12dgatl | 18 Aug, 2021, 09:29: PM
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CBSE 12-science - Physics
What is potential gradient along the wire Reading of voltmeter  
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Asked by diyasinha1701 | 31 Jul, 2021, 09:58: AM
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CBSE 12-science - Physics
pls solve
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Asked by sulaikhasulu393 | 29 Apr, 2020, 05:17: PM
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CBSE 12-science - Physics
A battery of end E and internal resistance r is used in a circuit with a variable external resistance R. Find the value of R for which the power consumed in R is maximum.
Asked by prakriti12oct | 28 Jul, 2019, 11:07: PM
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CBSE 12-science - Physics
By using the graph of terminal potential difference with external resistance how can we find internal resistance
Asked by rejimoljohn123 | 01 Jan, 2019, 09:08: PM
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CBSE 12-science - Physics
A 9 V battery is connected in series with a resistor .The terminal voltage is found to be 8 V. Current through the circuit is measured as 5 A. What is the internal resistance of the battery?
Asked by ayushmittal2424 | 09 Dec, 2018, 09:45: PM
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CBSE 12-science - Physics
Establish the expression for current flowing through an external resistance R connected to a cell of e.m.f. E and internal resistance r.
Asked by sd2021667 | 02 Dec, 2018, 09:09: PM
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CBSE 12-science - Physics
Draw a circuit diagram for the comparying of emf of two primary cell using a potentiometer
Asked by rohitbansal39295 | 15 Nov, 2018, 09:00: PM
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CBSE 12-science - Physics
two cells of voltage 10 v and 2 v and internal resistances of 10ohm and 5 ohm respectively, are connected in parallel with positive end of 10v battery connected to negative pole of 2v battery.find the effective voltage and effective internal resistance of the combination.
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Asked by my3shyll | 24 Sep, 2018, 07:33: PM
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