Solve V, I, R, P from any two values.
V = 12 V I = 0.5 A R = 24 Ω P = 6 W
Yes.
No.
Current-limiting resistor and nearest E24.
Vin, R1, R2 → Vout; solve any missing value.
Value + prefix ↔ base SI (yotta…yocto).
GPA from letter grades on a 4.0 scale.