True or false about ac circuits

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The quoted 220 V supply is an rms value.

2. Statement is true

   Yes

   Statement

   Impedance is smallest at the resonant frequency.

3. Statement is true

   No

   Statement

   An RL circuit with no capacitor can resonate.

4. Statement is true

   Yes

   Statement

   Reactance is measured in ohms.

5. Statement is true

   No

   Statement

   A wattless current dissipates a lot of power.

Instructions

Decide whether each statement is true or false.

Explanation