Question

10
Q2. In an alternating current circuit
consisting of elements in series, the
current increases on increasing the
frequency of supply. Which of the
following elements are likely to
constitute the circuit?​

Answer 1

Explanation:

Hence, the reactance of the circuit must be decreased as increase in frequency. So, one element that must be connected is capacitor. We can also connect a resistor in series. When frequency increases, XC decreases.

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c, d) This is the similar problem as we discussed above. In this problem, the current increases on increasing the frequency of supply. Hence, the reactance of the circuit must be decreased as increase in frequency. So, one element that must be connected is capacitor. We can also connect a resistor in series.

For a capacitive circuit,

XC = 1/ωC =1/2πfC

When frequency increases, XC decreases. Hence current in the circuit increases.

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