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Dharunika Vijayakumar
Subject: Physics
, asked on 24/5/18
two identical batteries , each of e.m.f. 2 volt and internal resistance 1.0 ohm are available to produce heat in an external resistance R=0.5 ohm by passing a current through it. the maximum joulean power that can be developed across R using these batteries
Answer
1
Dharunika Vijayakumar
Subject: Physics
, asked on 24/5/18
A 25 watt , 220 volt bulb and a 100 watt , 220 volt bulb are connected in parallel across a 220 volt line . which bulb will glow more brightly
Answer
1
Vani Singh
Subject: Physics
, asked on 23/5/18
Ques 1 plse
Answer
1
Dharunika Vijayakumar
Subject: Physics
, asked on 22/5/18
Two identical heaters rated 220 volt , 1000 watt are placed in series with each other across 220 volt lines . If the resistance do not change with temperature , then the combined power is ?
Answer
1
Aparna Sahu
Subject: Physics
, asked on 22/5/18
Solve this:
Q.14. A generator having a terminal voltage of 100 V is delivering a total current of 60 A to a load comprising N number of 50 W, 100 V lamps connected in parallel as shown in the circuit given below. What is the value of N?
Answer
1
Aishwarya
Subject: Physics
, asked on 22/5/18
Using kcl
Q. In a wheatstone bridge P=1 ohm, Q=2 ohm , R= 2 ohm, S=3 ohm and R
_{g}
= 4 ohm. Find the current through the galvanometer in the unbalanced position of the bridge, When a battery of 2V and internal resistance 2 ohm is used
Answer
1
Vani Singh
Subject: Physics
, asked on 22/5/18
$Q1)fig.belowshowsauniformringofresisi\mathrm{tan}ceR.Findequivalentresis\mathrm{tan}cebetweenAandB$
Answer
1
Vani Singh
Subject: Physics
, asked on 22/5/18
Q.5. Find the value of unknown resistance R so that no current flows through
$4\Omega $
. Also find potential difference through AD.
Answer
1
Vani Singh
Subject: Physics
, asked on 22/5/18
Question 3 please
Q3
What is the equivalent resistance between A and H of resistances as shown
Answer
1
Aditya
Subject: Physics
, asked on 21/5/18
pls answer my query pls fast in screenshot :
Q 7) As shown in the figure, a cylindrical tube of length 6 m has an inner radius 2 m, while the outer radius is 4 m. If p is the resistivity of tube, the resistance between its inner and outer surfaces is.
$\left(\mathrm{A}\right)\frac{\mathrm{P}}{12\mathrm{\pi}}\mathrm{log}\left(3\right)\phantom{\rule{0ex}{0ex}}\left(\mathrm{B}\right)\frac{\mathrm{P}}{2\mathrm{\pi}}\mathrm{log}\left(2\right)\phantom{\rule{0ex}{0ex}}\left(\mathrm{C}\right)\frac{\mathrm{P}}{12\mathrm{\pi}}\mathrm{log}\left(2\right)\phantom{\rule{0ex}{0ex}}$
Answer
1
Aditya
Subject: Physics
, asked on 21/5/18
what is current density
Answer
3
Rishika Malhotra
Subject: Physics
, asked on 21/5/18
Please solve Q4. Thank you
Q4. Find equivalent resistance between terminals A and D in following circuit.
Answer
5
Rishika Malhotra
Subject: Physics
, asked on 21/5/18
Draw te graph showing the variation of resistivity with temp for material having negative coefficient of resistance.
Answer
1
Rishika Malhotra
Subject: Physics
, asked on 21/5/18
Please ans the 4 question. Thank you
4.
Find equivalent resistance between terminals A and D in following circuit.
Answer
5
Noel George Cherian
Subject: Physics
, asked on 20/5/18
Q.15. A resistance R = 5
$\Omega $
is connected to one of the gaps in a metre bridge, which uses a wire of length I m. An unknown resistance X is in the other gap as shown in the figure. The balance point is noticed at 'l' cm from the positive end of the battery. On interchanging R and X, it was found that the balance point further shifts by 20 cm away from end A. Neglecting the end calculate the value of unknown resistance X used.
Answer
1
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What are you looking for?

Q.14. A generator having a terminal voltage of 100 V is delivering a total current of 60 A to a load comprising N number of 50 W, 100 V lamps connected in parallel as shown in the circuit given below. What is the value of N?

Q. In a wheatstone bridge P=1 ohm, Q=2 ohm , R= 2 ohm, S=3 ohm and R

_{g}= 4 ohm. Find the current through the galvanometer in the unbalanced position of the bridge, When a battery of 2V and internal resistance 2 ohm is usedQ3What is the equivalent resistance between A and H of resistances as shownQ 7) As shown in the figure, a cylindrical tube of length 6 m has an inner radius 2 m, while the outer radius is 4 m. If p is the resistivity of tube, the resistance between its inner and outer surfaces is.

$\left(\mathrm{A}\right)\frac{\mathrm{P}}{12\mathrm{\pi}}\mathrm{log}\left(3\right)\phantom{\rule{0ex}{0ex}}\left(\mathrm{B}\right)\frac{\mathrm{P}}{2\mathrm{\pi}}\mathrm{log}\left(2\right)\phantom{\rule{0ex}{0ex}}\left(\mathrm{C}\right)\frac{\mathrm{P}}{12\mathrm{\pi}}\mathrm{log}\left(2\right)\phantom{\rule{0ex}{0ex}}$

Q4. Find equivalent resistance between terminals A and D in following circuit.

4.