Question

DAV Public School, Ballabhgarh
Subject : Science(Physics)
Assignment 1 Ch:Electricity
Class-X (2019-20)
01.
Q2.
Q3.
04.
Q5.
We have a copper wire of resistance R. This wire is pulled so that its length is doubled (temperature
remains constant). Find the new resistance of the wire in terms of its original resistance,
Why does resistance of metallic conductor increase with increase in temperature?
Differentiate between electrical resistance and specific resistance (resistivity) of a conductor,
What is Ammeter? Why should it have low resistance?
Four resistances 2 ohm of each are joined end to end to form a square ABCD. Calculate the
equivalent resistance of the combination between two adjacent corners,
Draw a schematic diagram of a circuit consisting of a battery of four cells of 2V each, a 4 ohm resistor, an
8 ohm resistor, and a 12 ohm resistor, ammeter and a plug key, all connected in series,
Calculate the resistance between A and B in the following networks :-
06.
Q7.
20
22
36
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please give the answer
I will give 300points​

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

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