A resistor is marked with the following color bands brown black red and silver. What is the resistance of this resistor A. 10 B. 10000 C. 100 D. 1000?

The color bands on the resistor indicate its resistance value: brown (1), black (0), and red (multiplier of 100). This means the resistance is 10 multiplied by 100, which equals 1000 ohms. Therefore, the correct answer is D. 1000.