Key Topic 10: Ohm's Law-2

Question 0

3-10B2: What is the maximum DC or RMS voltage that may be connected across a 20 watt, 2000 ohm resistor?

A. 10 volts.
B. 100 volts.
C. 200 volts.
D. 10,000 volts

Answer 0

C. 200 volts.

Question 1

3-10B1: What is the peak-to-peak RF voltage on the 50 ohm output of a 100 W transmitter?

A. 70 volts.
B. 100 volts.
C. 140 volts.
D. 200 volts.

Answer 1

D. 200 volts.

Question 2

3-10B3: A 500-ohm, 2-watt resistor and a 1500-ohm, 1-watt resistor are connected in parallel. What is the maximum voltage that can be applied across the parallel circuit without exceeding wattage ratings?

A. 22.4 volts.
B. 31.6 volts.
C. 38.7 volts.
D. 875 volts.

Answer 2

B. 31.6 volts.

Question 3

3-10B4: In figure 3B1, what is the voltage drop across R1?

A. 9 volts.
B. 7 volts.
C. 5 volts.
D. 3 volts.

Answer 3

C. 5 volts.

Question 4

3-10B5: In figure 3B2, what is the voltage drop across R1?

A. 1.2 volts.
B. 2.4 volts.
C. 3.7 volts.
D. 9 volts.

Answer 4

D. 9 volts.

Question 5

3-10B6: What is the maximum rated current-carrying capacity of a resistor marked “2000 ohms, 200 watts”?

A. 0.316 amps.
B. 3.16 amps.
C. 10 amps.
D. 100 amps.

Answer 5

A. 0.316 amps.