The load across a 12 V battery consists of

a series combination of three resistors 21 ohm, 22 ohm, and 56 ohm.
What is the total resistance of the load?
Answer in units of
.

To find the total resistance of the load, we need to add up the resistance values of the three resistors. Since the resistors are connected in series, their resistances simply add up.

Total resistance (R_total) = Resistor 1 + Resistor 2 + Resistor 3

R_total = 21 ohm + 22 ohm + 56 ohm

R_total = 99 ohm

Therefore, the total resistance of the load is 99 ohms.