Back to ALTERNATING CURRENT
NEET UG PHYSICS MCQ: ALTERNATING CURRENT
1
Medium
1 of 1
Understanding
+4 | -1
Which of the following quantities remains constant in a step-down transformer ?
View answer and explanation
Correct option: C
Power
Option C (Power) is correct because, ideally, a transformer conserves power; the power in the primary coil equals the power in the secondary coil.
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