Physics for IGCSE & O level - Electricity (Section 5 - No. 7)
What is the formula for calculating the total resistance of resistors in parallel?
R_total = 1/R1 + 1/R2
1/R_total = 1/R1 + 1/R2
R_total = R1 + R2
R_total = R1 - R2
Explanation
For parallel resistors, the reciprocal of the total resistance equals the sum of the reciprocals of individual resistances.