What Makes This Circuit Go?

In a single loop, ac circuit voltage and current is given by:

V ( t ) = 300 sin ( 100 π t + π 6 ) V(t) = 300 \sin ( 100 \pi t + \frac{\pi}{6})
I ( t ) = 5 sin ( 100 π t π 6 ) I (t) = 5 \sin (100 \pi t - \frac{\pi}{6} )

The circuit may be comprised of:

Note: The above image does not necessarily represent the circuit in the question.

Image credit: Wikipedia
resistance only inductance and resistance only capacitance only capacitance and resistance only

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5 solutions

Discussions for this problem are now closed

Sree Harsha
Mar 8, 2014

current lags voltage..so presence of inductance ..as it isnt exactly 90 R is present

current is lagging voltage bye 60 degree. if it is lagging exactly 90 degree than circuit will be purely inductive. this means circuit contains resistance also.

Bharat Bhawsar - 7 years, 3 months ago

current lag 60 degree not a 90 degree, therefore circuit will be resistance + inductance

waqas ahmed - 7 years, 2 months ago
Gopal Sahu
Apr 19, 2014

Current is lagging less than 90 degree it means circuit must have inductor and resitor...

Harikesh Yadav
Apr 15, 2014

current lags voltage by 90 deg. in a pure inductor,since here current is lagging by 60 deg so the circuit contains inductance and resistance.

Current lags voltage by 60 degree(not 90 degree or 0 degree). implies the circuit comprises with resistive and inductive components.

Karthik Abburi
Mar 14, 2014

voltage leads by 30 degrees with respect to reference and current lags by 30 degrees, so the phase displacement between voltage and current is 60 degrees. Hence the circuit must consists of resistance and inductance only.

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