Question

WHEN THREE RESISTORS ARE PLACED IN SERIES AND PARALLEL WHAT IS THE EQUIVALENT RESISTANCE. ALSO WHAT WILL BE THE RESISTANCE IF THE RESISTANCES ARE EQUAL?

Answer 1

Answer:

If resistors are in parallel,

the equivalent resistance,

• 1/ Req = 1/R1 + 1/R2 + 1/R3
• = 1/R + 1/R + 1/R ( for equal resistance )
• = 3/R
• Req = R/3

If resistors are in series,

the equivalent resistance,

• Req = R1 + R2 + R3
• = R + R + R ( for equal resistance )
• Req= 3R

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