Answer: The computer brain is a microprocessor called the central processing unit (CPU).
Explanation:
The CPU is a chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work -- the transistors in the CPU manipulate the data.
The value of total resistance of resistors connected in parallel is calculated through the equation,
R = 1 / (1/R1 + 1/R2 + 1/R3 + 1/Rn)
Substituting the known values,
R = 1 / (1/2 + 1/6 + 1/10)
R = 30/23 ohms
The formula for power with the use of resistance and voltage is,
P = V² / R
Substituting,
P = (100 V)² / (30/23 ohms)
P = 7.67 kW
Thus, the answer to this item is letter C.
