‹ Back to the paper
An alternating emf is applied to a circuit containing a resistor connected in series with an…
An alternating emf $E = 5.0 \sin(314t)\text{ V}$ is applied to a circuit containing a resistor connected in series with an unknown component X.
The current in the circuit is found to be $I = 3.0 \sin\left(314t - \frac{\pi}{3}\right)\text{ A}$.
(a)
Identify the component X.
(b)
Calculate rms value ($I_{\text{rms}}$) of the current flowing through the circuit.
(c)
Find the frequency of the source.
(d)
Calculate power factor.
(e)
Find the impedance ($Z$) of the circuit.
Answer
No answer yet.
From ISC 2025 Physics Paper 1, question 18(ii).