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Pallavi Nambiar asked a question
Subject: Science, asked on on 2/12/16
In the circuit shown five resistors are connected. The equivalent resistance between X & Y is ?​
A Thomas asked a question
Subject: Science, asked on on 13/10/16
electric current flows through three lamps when arranged in (a)series(b)a parallel if the filament of one lamp breaks.explain what happens to the other 2 lamps in both the cases
Mahesh Madhusoodanan asked a question
Subject: Science, asked on on 26/9/16
To study the dependence of potential difference on current flowing across a resistor, a student takes reading through voltmeter and ammeter when key is open and closed respectively.

(a) Find the correct reading of voltmeter
(b) Find the correct reading of ammeter
​
Megha asked a question
Subject: Science, asked on on 15/10/16
A copper wire of resistivity 1.63x10-8 ohm meter has a cross section area of 10.3x10-4cm2 . Calculate the length of the wire required to make a 20 ohm coil.
Ruchit.chudasama asked a question
Subject: Science, asked on on 30/10/16
 A uniform electric field exists in positive x-direction. From a point A in the field if one moves
  •  in positive x-direction, the potential will increase
  •  in negative x-direction, the potential will increase
  •  in positive y-direction, the potential remains constant
  •  in negative y-direction, the potential remains constant
  •  
  •  
  •  
  • more than one answers are possible
Savio asked a question
Subject: Science, asked on on 6/7/16
why in an electrolyte current flows due to the movement of both cations and anions
Cookie Martis asked a question
Subject: Science, asked on on 14/10/16
AN ELECTRIC CURRENT OF 2A PASSES THROUGH A COIL OF 10 OHM RESISTANCE FOR 10 MINUTES .CALCULATE THE AMOUNT OF HEAT PRODUCED .
Archit Anand K.p. asked a question
Subject: Science, asked on on 12/9/16

a)equivalent resistance in the circuit
b)total current in the circuit
c)potential difference across 30 ohm resistance
Athena C. Jayan asked a question
Subject: Science, asked on on 26/9/16
Resistance of a metal wire of length 1 m is 26 ohm at 20 c. If the diameter of the wire is 0.3 mm ,  What will be the resistivity of the metal at that temperature ?
Ayman Zakir asked a question
Subject: Science, asked on on 28/10/16
Name the effect of electric current which is utilized in the working of an electrical fuse. (1 Mark)
Merin Ann Pious asked a question
Subject: Science, asked on on 24/9/16
how many 40w bulb can be safely connected in parallel circuit which is drawing current through a 5a fuse from a 220v supply?
Arunav Goel asked a question
Subject: Science, asked on on 15/9/16
An electric heater has a resistance of 20 ohm connected to a cell of 600 V . What amount of heat energy does the heater produce per second ?
Neha Jain asked a question
Subject: Science, asked on on 6/12/16
Ramesh uses six bulbs B1, B2, B3, B4, B5 and B6 to make a circuit that is similar to a domestic circuit, as shown in the figure. He shows this circuit to his teacher. His teacher tells him that the circuit constructed by him can exactly replicate a domestic curcuit if he removes one bulb from the same. Which two bulb should be removed from the circuit by Ramesh to make it similar to a domestic electric circuit?
​
Neezam Uddin asked a question
Subject: Science, asked on on 25/3/18
The minimum no. of capacitors each of 3uF required to make a circuit with an equivalent capacitance 2.25uF
Vishnu asked a question
Subject: Science, asked on on 27/12/16
Assertion A: The temperature of a metal wire rises when an electric current is passed through it.
Reason R : Collision of metal atoms with each other releases heat energy.
(1) Both A and R are true and R is the correct explanation of A (3) A is true but R is false
(2) Both A and R are true but R is not a correct explanation of A (4) A is false but R is true
Kusha Sharma asked a question
Subject: Science, asked on on 23/9/16
  • ​a hot plate connected to a 220 V has two resistance coils A and B each of 22 omega resistance. Calculate the amount of electric current flowing through these coils are:
  • used indiviually
  • connected in series 
  • connected in parallel.
Sudharsan asked a question
Subject: Science, asked on on 24/10/16
the equivalent resistance of n resistor each of same resistance when connected in series is R. if the same resistance are connected in parallel, the equivalent resistance will be.  explain me with clear steps
Savio asked a question
Subject: Science, asked on on 6/7/16
​what is internal resistance and why primary cells have high internal resistance
Arpit Chhabra asked a question
Subject: Science, asked on on 12/12/16
name the charged particles responsible for current condition in :
a) copper wire
b) lemon juice
c) vinegar
Prakriti Chhabra asked a question
Subject: Science, asked on on 27/9/16
how will the resistivity of a conductor change when its length is tripled by stretching it​
X asked a question
Subject: Science, asked on on 25/6/18
Hello I'm an Indian, can anyone tell me how much is current input to Remson Savvy Heater 3kw ?
Trisha Thakur asked a question
Subject: Science, asked on on 24/9/16
three resistors of 1ohm,2ohm and 3ohm are connected in parallel.if 1ohm draws a current of 1A,what resistance should be connected in circuit [parallel] so that power produced in new circuit becomes tripled the power produced in the previous circuit....please answer soon
thank you
Arjun Saxena asked a question
Subject: Science, asked on on 14/9/16
If athe graph V-I shows that resistance of A is greater than B but if both materials are of same length and same thickness ,which of the two is made of higher resistivity​
Anirudh Krishna Das asked a question
Subject: Science, asked on on 15/9/16
the potential difference across the terminals across the terminals of a battery is 50 V when 11 A  are drawn and 60Vwhen 1 A is drawn . the emf and the terminal resistance of the resistors are???
Vivek Rahi asked a question
Subject: Science, asked on on 17/9/16
is resistance directly proportional to resistivity
Mrinal asked a question
Subject: Science, asked on on 31/7/15
if electric field at a point is 0, what is the potential at that point?
Rahul Kumar asked a question
Subject: Science, asked on on 24/9/16
why does earth is at zero potential???i reviewed an answer by an expert but it said there is no definition for electric potential at one point which is totally wrong as we have one so please clear me why is it so(no links please)
Shyam K asked a question
Subject: Science, asked on on 24/9/16
why is electric current flowing only on external surface of the conductor?
Kushu Raheja asked a question
Subject: Science, asked on on 18/9/16
Differentiate between resistance and resistivity?
Sudharsan asked a question
Subject: Science, asked on on 24/10/16
In the given circuit
a) through the 3 ohm resistor is 2 A
b) through the 3 ohm resistor is 0.5 A
c) through the 4 ohm resistor is 0.5 A
d) through the 4 ohm resistor is 0.25 A
Vishnu asked a question
Subject: Science, asked on on 10/12/16
A cylindrical copper rod is deformed to twice it's original length with no change in volume.The resistance between it's ends before the change was R.Now it's resistance will be
Anjali K asked a question
Subject: Science, asked on on 2/10/16
state the formula showing how the current I in a conductor varies when the V applied to it is increased in steps 
Sashank asked a question
Subject: Science, asked on on 16/10/16
if 2 bulbs are connected in series with 3 bulbs in parallel circuit then which bulb will grow brightly
Arathy Venu asked a question
Subject: Science, asked on on 16/9/16
why does electric current flow the moment when swithch is on
Mahima Manoj asked a question
Subject: Science, asked on on 27/9/16
why do we connect voltmeter in parallel connection and ammeter in series connection ?
Hanan asked a question
Subject: Science, asked on on 27/9/16
How many 176ohm resistors in parallel are required to carry 5ampere current on a 220v line?
Mohammed Irfan Ali asked a question
Subject: Science, asked on on 8/10/16
Why are many resistors connected in Series or parallel instead of 1 Resistor having large resistance ?
Savio asked a question
Subject: Science, asked on on 6/7/16
what is the diff btvin potential and potential difference
Savio asked a question
Subject: Science, asked on on 6/7/16
how a rheostat works ? explain with video
Sandhyaselvam asked a question
Subject: Science, asked on on 24/9/16
State three features of both series and parallel combination
 
Sanith Rao asked a question
Subject: Science, asked on on 15/9/16
How to get effective resistance of 6 ohm with 3 6 ohm resistors?
Govind asked a question
Subject: Science, asked on on 28/12/17
electric power can be calculated using the relation P=V^2 AND P=I^R.In these relations power is inversely proportional and directly proportional to R respectively.How can you account for this contradiction
Savio asked a question
Subject: Science, asked on on 6/7/16
what is the use of conventional current?it is false right
 
Preethika asked a question
Subject: Science, asked on on 10/10/16
a 1Kw heater is connected to a 220V mains.calculate
  1. the current flowing through the heater
  2. the resistance of the heater 
  3. the electrical energy consumed in 1Kw if the heater is used for 1 hour
Mohammed Irfan Ali asked a question
Subject: Science, asked on on 15/9/16
Since current can be expressed as amount of electrons flowing through a cross section of a wire in unit time, if the resistor is added, it will oppose/resist the flow of charges thus slowing the flow of electrons per unit time. So there should be a difference in values of current obtained before 2 series resistors and between 2 resistors(Considering that the resistor opposes and slows down the flow of electrons thus decreasing the current) , but there is no difference, how?
Astha Shukla asked a question
Subject: Science, asked on on 7/10/16
What is electric current?Is it flow of charge or is it flow of neurons or is it a flow of protons?
Hishaam M asked a question
Subject: Science, asked on on 9/12/20
If 60 joules of energy is consumed in following 1 ampere current for 10 seconds in a conductor then what will be the potential drop at its ends ?
Mohammed Irfan Ali asked a question
Subject: Science, asked on on 8/10/16
What relation does current has in relation to resistors connected in Series connection and Parallel connection and why so ?
Dev asked a question
Subject: Science, asked on on 4/7/20
Forces in fluids
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