Question:
Which of the following statements on alternating current circuits are true?
A. In circuits with primarily inductive loads, the current leads the voltage.
B. The ratio of resistance to impedance of A.C. circuit is known as power factor of the circuit.
C. Two alternating quantities reach their maximum or minimum value at different time, keeping any equal phase angle between them are called 'in phase'
D. The steady state d.c. current which produce the same heat as that produced by alternating current in a given time and given resistance is known as the root mean square value of alternating current.
Choose the most appropriate answer from the options given below:
Which of the following statements on alternating current circuits are true?
A. In circuits with primarily inductive loads, the current leads the voltage.
B. The ratio of resistance to impedance of A.C. circuit is known as power factor of the circuit.
C. Two alternating quantities reach their maximum or minimum value at different time, keeping any equal phase angle between them are called 'in phase'
D. The steady state d.c. current which produce the same heat as that produced by alternating current in a given time and given resistance is known as the root mean square value of alternating current.
Choose the most appropriate answer from the options given below:
A. In circuits with primarily inductive loads, the current leads the voltage.
B. The ratio of resistance to impedance of A.C. circuit is known as power factor of the circuit.
C. Two alternating quantities reach their maximum or minimum value at different time, keeping any equal phase angle between them are called 'in phase'
D. The steady state d.c. current which produce the same heat as that produced by alternating current in a given time and given resistance is known as the root mean square value of alternating current.
Choose the most appropriate answer from the options given below:
Show Hint
Power factor = R/Z.
RMS value: equivalent DC heat value.
Inductive loads: current lags voltage.
RMS value: equivalent DC heat value.
Inductive loads: current lags voltage.
Updated On: Aug 18, 2026
- (A), (B) only
- (B), (D) only
- (A), (B), (C) only
- (A) and (D) only
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
AC circuits have specific characteristics.
Power factor and RMS value are important concepts.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand AC circuit concepts.
Step 3: Detailed Explanation:
A. In inductive loads, current lags, not leads - incorrect.
B. Power factor = Resistance Impedance - correct.
C. 'In phase' means zero phase angle, not equal phase angle - incorrect.
D. RMS value is the equivalent DC value that produces same heat - correct.
Thus, B and D are correct.
Step 4: Final Answer:
The correct statements are (B) and (D).
Hence, the correct option is (B).
AC circuits have specific characteristics.
Power factor and RMS value are important concepts.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand AC circuit concepts.
Step 3: Detailed Explanation:
A. In inductive loads, current lags, not leads - incorrect.
B. Power factor = Resistance Impedance - correct.
C. 'In phase' means zero phase angle, not equal phase angle - incorrect.
D. RMS value is the equivalent DC value that produces same heat - correct.
Thus, B and D are correct.
Step 4: Final Answer:
The correct statements are (B) and (D).
Hence, the correct option is (B).
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