Using OHM's Law

V = IR

P = VI

let,

R1 = 15 ohm

R2 = 10 ohm

I1 = 0.63 A

I2 = ?

P = ?

V = ?

solve for Voltage (V) using R1 and I1

V = I1 * R1

V = (0.63) * (15)

V = 9.45 V

solve for I2,

I2 = V / R2

I2 = 9.45 / 10

I2 = 0.945 A

Solve for Total Current (I-total),

I-total = I1 + I2

I-total = 0.63 + 0.945

I-total = 1.575 A

Solve for Power,

P = V * I-total

P = 9.45 * 1.575

P = 14.88 Watts

Solve for Total Resistance,

Total Resistance = (R1*R2) / (R1+R2)

Total Resistance = (15*10) / (15+10)

Total Resistance = (150) / (25)

Total Resistance = 6 ohms

CHECK for I-total using Total Resistance,

I-total = V / Total Resistance

I-total = 9.45 / 6

I-total = 1.575 A   Same answer as I-total = I1 + I2

* as always, double check my answers for errors or carelessness.

#NO TO GUESS GUESS, TSAMBA TSAMBA & COPY PASTE SOLUTION!

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