alleryStart learning →Which kind of supply has a voltage whose polarity keeps changing periodically?
ASolar cell supply
BAlternating supply
CBattery supply
DDry cell supply
Answer & Solution
Correct answer: B. Alternating supply
An AC supply reverses the polarity of its voltage at regular intervals, unlike the fixed polarity of DC.
Keep practising AC Circuits
Browse all AC Circuits questions for MHT-CET, or explore more Physics topics.
Related questions
A source e = 140 sin(3142t) volts is applied to a resistor. What is its frequency?In a pure inductive circuit, what is the source voltage at the instant the current is at iA 0.2 H inductor is joined to a 50 Hz source of peak emf 210 V. What is the peak current?For e = 6 sin(100πt) volts, what is the instantaneous voltage at t = 2 ms?Which AC does a pure inductor oppose most strongly?How does an ideal resistor respond to AC compared with DC?Which home appliance runs directly on AC without first converting it to DC?A current is given by i = 5 sin(200πt) amperes. What is its frequency?