Five resistors are connected in a circuit as shown. Find the ammeter reading when circuit is closed.
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Answered by
3
Answer:
This is because the resistance is directly proportional to length,so if length increase then resistance decreases.we also know that current is inversely proportional to resistance,so if resistance increases then the current will get reduced.aa for your example as the length is doubled,so the resistance also gets doubled.therefore the current gets reduced to half
R=(resistivity* length of resistor)\area of crossection of the resistor.
R= voltage*current
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Answered by
0
Answer:
The resistance between the points B and D is x
Now the resistance of the whole combination is
R = 0.5 Ω + x + 0.5 Ω
= 0.5 Ω + 2.0 Ω + 0.5 Ω
= 3.0 Ω
Explanation:
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