Circuits+-+Pt(2)

__Resistors in Series__ Above is an example of a series circuit.

V = IR is the basic formula for circuits.

If the circuit had no resistors to the current, the sum of the voltage (V) equals to the sum of the voltage across the resistors (R)
 * V = V1 + V2 + V3 + ... Vn
 * R = R1 + R2 + R3 + ... Rn
 * IR total = I1R1 + I2R2 + I3R3 + ... InRn
 * I = I1 = I2 = I3 = ... = In

__Example:__

Three resistors rated at 5Ω, 6Ω, and 7Ω and connected in a series circuit to a 50-V battery.
 * 1) What is the equivalent resistance?
 * 2) What is the current through each resistor?
 * 3) What is the voltage across each resistor?

1. Formula: R = R1