Back to ALTERNATING CURRENT
NEET UG PHYSICS MCQ: ALTERNATING CURRENT
1
Medium
1 of 1
Understanding
+4 | -1
Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capacitor. If the frequency of the emf of AC is increased, the effect on the value of the current
View answer and explanation
Correct option: D
Decreases in the first circuit and increases in the other
Option D is correct because increasing the frequency decreases the current in an inductive circuit (due to increased inductive reactance) and increases the current in a capacitive circuit (due to decreased capacitive reactance).
More Questions from ALTERNATING CURRENT
Practice All Chapter MCQs →
Assertion (A) : In an circuit, potential difference across the capacitor may be greater than the applied voltage.
Reason (R) : , whereas and can be greater than also. When power is drawn from the secondary coil of the transformer, the dynamic resistance An alternating e.m.f. is applied to purely capacitive circuit. The phase relation between e.m.f. and current flowing in the circuit is or
In a circuit containing capacitance only
Average power in the L-C-R circuit depends upon A generator produces a voltage that is given by , where t is in seconds. The frequency and r.m.s. voltage are In a choke coil, the resistance and resistance are such that
Reason (R) : , whereas and can be greater than also. When power is drawn from the secondary coil of the transformer, the dynamic resistance An alternating e.m.f. is applied to purely capacitive circuit. The phase relation between e.m.f. and current flowing in the circuit is or
In a circuit containing capacitance only
Average power in the L-C-R circuit depends upon A generator produces a voltage that is given by , where t is in seconds. The frequency and r.m.s. voltage are In a choke coil, the resistance and resistance are such that