3 resistance whose value is 10oms 20oms and 30oms respectively. find the value of resistance when they are connected in series and parrlel. draw with diagram
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Hi there!
We know that for the Resistances in series:
Rs = R1 + R2 + R3
Rs = 10 + 20 + 30 = 60 Ohm
In Parallel:
I/Rp = 1/R1 + 1/R2 + 1/R3
= 1/10 + 1/20 =+ 1/30
Rp = 5 Ohms
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We know that for the Resistances in series:
Rs = R1 + R2 + R3
Rs = 10 + 20 + 30 = 60 Ohm
In Parallel:
I/Rp = 1/R1 + 1/R2 + 1/R3
= 1/10 + 1/20 =+ 1/30
Rp = 5 Ohms
_________________
Hope this helps.
Mark as brainliest
ayushbhardwaj:
and parrlel
Answered by
1
Resistance: The property of a conductor which resists or opposes the flow of current through it is called the resistance of the conductor. Its SI unit is ohm(Ω).
Current ∝ 1/Resistance
The resistance of a uniform conductor is
directly proportional to the length of the conductor and inversely proportional to the area of cross-section of the conductor.
Therefore, R∝ l/A or R = ρ l/A
where p is the constant of proportionality, called the specific resistance or resistivity of the material of the conductor. It depends on the nature of the material of the conductor, i.e. it is constant for a particular material but different for different materials. The unit of resistivity is ohm-metre or Ω-m.
Series combination of resistors:
The arrangement in which various resistors are connected in such a way that they provide only one path to the flow of current is called the series combination of the resistors. The series combination of resistors Rv R2 and R3 is shown in the figure given below.

CHARACTERISTICS OF SERIES CIRCUIT
The current flowing through all the resistors in series circuit is same.The total voltage across the combination is equal to the sum of the voltage drop across the individual resistor.Voltage across any resistor is directly proportional to the resistance of that resistor (as I is constant). Equivalent resistance of the series circuit is equal to the sum of the individual resistances, i.e. Req = R3 + R2 + R3.The value of equivalent resistance is higher than the highest value of resistor used in the series circuit.
Uses of series circuit:
It is used when
the resistance of the circuit is to be increased. the current in the circuit is to be decreased.the less potential difference across a particular resistor is needed
Current ∝ 1/Resistance
The resistance of a uniform conductor is
directly proportional to the length of the conductor and inversely proportional to the area of cross-section of the conductor.
Therefore, R∝ l/A or R = ρ l/A
where p is the constant of proportionality, called the specific resistance or resistivity of the material of the conductor. It depends on the nature of the material of the conductor, i.e. it is constant for a particular material but different for different materials. The unit of resistivity is ohm-metre or Ω-m.
Series combination of resistors:
The arrangement in which various resistors are connected in such a way that they provide only one path to the flow of current is called the series combination of the resistors. The series combination of resistors Rv R2 and R3 is shown in the figure given below.

CHARACTERISTICS OF SERIES CIRCUIT
The current flowing through all the resistors in series circuit is same.The total voltage across the combination is equal to the sum of the voltage drop across the individual resistor.Voltage across any resistor is directly proportional to the resistance of that resistor (as I is constant). Equivalent resistance of the series circuit is equal to the sum of the individual resistances, i.e. Req = R3 + R2 + R3.The value of equivalent resistance is higher than the highest value of resistor used in the series circuit.
Uses of series circuit:
It is used when
the resistance of the circuit is to be increased. the current in the circuit is to be decreased.the less potential difference across a particular resistor is needed
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