Alternating current is produced by a voltage source which polarity:
Correct answer: A. Keeps on reversing with time
- A. Keeps on reversing with time
- B. Remains the same
- C. Reverses after period
- D. None of these
Explanation
The correct option is that in alternating current (AC), the voltage source polarity keeps on reversing with time, leading to a continuous change in the direction of current flow.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
Practise Alternating Current
592 free Alternating Current MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Alternating Current questions
The alternating current can be transmitted:
Alternating voltage is:
Reactance offered by a coil having no resistance in a.c circuit is equal to:
Using θ = ωt and ω = 2π/T the angle through which the coil of the A.C generator rotates when t =T/2 is:
If V =Vo sin ωt and ω =2π/T , the value of alternating voltage V when t=3T/4 is:
The waveforms of alternating voltage is the graph between: