Question: If the total power in a circuit is 100W and the power factor is 0.8, what is the apparent power?
Options:
80VA
100VA
125VA
200VA
Correct Answer: 125VA
Solution:
Apparent power (S) is calculated using S = P / power factor. Here, S = 100W / 0.8 = 125VA.
If the total power in a circuit is 100W and the power factor is 0.8, what is the
Practice Questions
Q1
If the total power in a circuit is 100W and the power factor is 0.8, what is the apparent power?
80VA
100VA
125VA
200VA
Questions & Step-by-Step Solutions
If the total power in a circuit is 100W and the power factor is 0.8, what is the apparent power?
Step 1: Understand the terms. Total power (P) is given as 100W and the power factor is 0.8.
Step 2: Know the formula for apparent power (S). It is S = P / power factor.
Step 3: Substitute the values into the formula. Here, P = 100W and power factor = 0.8.
Step 4: Calculate the apparent power. S = 100W / 0.8.
Step 5: Perform the division. 100 divided by 0.8 equals 125.
Step 6: Write the final answer. The apparent power is 125VA.
Power Factor – The ratio of real power (P) to apparent power (S) in a circuit, indicating the efficiency of power usage.
Apparent Power Calculation – Apparent power (S) is calculated as the total power (P) divided by the power factor, representing the total power flowing in the circuit.
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