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Hrishikesh
Subject: Physics
, asked on 6/4/18
Please solve this...
Q.17. In the given figure, find the P.D. across the 20
Ω
resistor.
Answer
1
Samruddhi Amberkar
Subject: Physics
, asked on 9/9/17
Q.4. It is required to obtain a battery that has an emf of 10 V and that can supplya maximum current of 4A. How many cells of emf 2.5 V supplying a current of 1 A are required and how should they be arranged?
Answer
2
Samruddhi Amberkar
Subject: Physics
, asked on 9/9/17
From where did the circled 1.5 come??????and please solve further sum
Answer
1
Samruddhi Amberkar
Subject: Physics
, asked on 9/9/17
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Answer
1
Palak Gupta
Subject: Physics
, asked on 15/1/17
what should have been the normal value of emf and internal resistance of a new dry cell
Answer
1
Madhura Bose
Subject: Physics
, asked on 15/1/17
the potential difference across resistor r is Ir.Now if potential difference across r is measured using voltmeter of resistance Rv.show that reading of voltmeter is less than that of actual current.plzz answer soon..
Answer
1
Ashish Chandel
Subject: Physics
, asked on 10/1/17
two wires A and B of same material and having same length have cross sectional areas in ratio 1:6. what would be ratio of heat prodeuced in these wires when same voltage is applied across each
Answer
2
Amaiyra
Subject: Physics
, asked on 30/12/16
what is dimensional formula of drift velocity (v
d
) ???
Answer
1
Ankur Agrawal
Subject: Physics
, asked on 12/12/16
what si the direction of flow of current in potentionmeter . plz show using figure with arrow indicaing direction of current
Answer
1
Manideep Varma
Subject: Physics
, asked on 27/11/16
there are 5resistance of 1 ohm each if the first three are joined in parallel andthen remaining two are joined in series,and these combination are connected inserices final resistance of combination is
Answer
2
Manideep Varma
Subject: Physics
, asked on 27/11/16
a primary cell has an e m f of 1.5v,when short circuited it gives a current of 3A,then the internal resistance of the cell is
Answer
1
Archana
Subject: Physics
, asked on 18/11/16
what is the reason for insulators to not allow current through them?
Answer
4
Madiha Mariam
Subject: Physics
, asked on 27/10/16
experts, I am not understanding why the graph showing relation of resistivity and temperature for COPPER is parabolic in nature. Copper is a metal, so, shouldn't it be a straight line?
Answer
3
Aditya Mathur
Subject: Physics
, asked on 27/10/16
if the rate of current of 2 A/s induces an emf of 10mV in a solenoid what is the self inductance of the solenoid?
Answer
1
Shivam Sharma
Subject: Physics
, asked on 2/10/16
how to solve for infinite resistance circuit??
Answer
1
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Q.17. In the given figure, find the P.D. across the 20 resistor.