Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

Plz explain me how do we choose the final R for potential difference in final step
question image
Asked by vishakhachandan026 | 30 Mar, 2019, 08:36: AM
answered-by-expert Expert Answer
From the figure, it appears a voltage source of emf 48V with internal resistance 100Ω is connected to
two resistance of 100Ω which are in series.

One resistance 100Ω is fixed and other resistance 100Ω has an variable arm at Q so that
resistance between P and Q can be varied . At a given position of Q, resistance between P and Q is 20Ω .
 
current in the circuit = 48/(100+100+100) = 16×10-2 A
 
hence potential difference across P and Q = 16×10-2 × 20 = 3.2 V
Answered by Thiyagarajan K | 30 Mar, 2019, 09:08: AM

Application Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Physics
\int_{0}^{4}e^{x/2}dx
Asked by gamingbadboy085 | 01 May, 2024, 06:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
time of flight of a verticallly projected stone is 8 sec then position of stone after 6 seconds from ground is
question image
Asked by bhargavreddynellaballi | 30 Apr, 2024, 08:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
explain it clearly
question image
Asked by ravichandraravula66 | 29 Apr, 2024, 11:20: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Alternating Current
question image
Asked by kmani310507 | 28 Apr, 2024, 04:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find current
question image
Asked by arivaryakashyap | 23 Apr, 2024, 10:40: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Three equal charges, 2⋅0 × 10 − 6 C each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Find the Coulomb force experienced by one of the charges due to the rest two.
question image
Asked by ratnadeep.dmr003 | 21 Apr, 2024, 11:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Time period for a simple harmonic motion (d ^ 2 * x)/(d * t ^ 2) =- mu xis:
Asked by ksahu8511 | 19 Apr, 2024, 11:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find the acceleration
question image
Asked by mohammedimroz | 13 Apr, 2024, 09:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
solution of 12th question
question image
Asked by medhamahesh007 | 02 Apr, 2024, 11:11: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
if Bi with a mass number 211 and atomic number 83 undergoes beta decay the resultant daughter nuclei will be
Asked by gundlasumathi93 | 31 Mar, 2024, 02:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×