Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET Medical202621 April 2026Morning ShiftPhysicsAlternating CurrentActual

The r.m.s value of current in a 50 Hz A.C. circuit is 10 A. The average value of A.C. current over a cycle is

Options

  1. AZero
  2. B10 A
  3. C7.072 A
  4. D14.14 A

Correct answer

A. Zero

Step-by-step solution

The average value of a sinusoidal alternating current over a complete cycle is given by the integral of the current over one time period divided by the time period. I_ avg = 1 T ₀^ T I₀ ( t) dt Since the area under the positive half-cycle is equal and opposite to the area under the negative half-cycle, the integral evaluates to zero. I_ avg = 0 The given values of r.m.s current and frequency are not required for this calculation. Answer: Zero

Practice Alternating Current on Quantrex Academy →

More from Alternating Current

A step down transformer connected to an a.c. mains of 220 V is made to operate at 5.5 V, 44 W lamp. The current in the primary circuit is (Ignore power losses) 2026Which phasor diagram represents LCR circuit at resonance? 2026For an R-L series circuit, the power factor is 3 2 , for R-L frequency f Hz. If the frequency doubles, the new power factor will be 2026In an AC circuit, the current is I = 100 (5t) A. The value of I_ rms is 2026The ratio of power factor of purely resistive circuit to purely reactive circuit is ( 0^ = 1 and 90^ = 0 ) 2026In an LCR series circuit, at resonance, 2026In an AC circuit, E and I are given by E = 150 (150t) V and I = 150 (150t + 3 ) A. The power dissipated in the circuit is (60)^ = 1/2 2026A series LCR circuit is connected across a source E of e.m.f. E=15 (50 t- 3 ) . The current from the supply is I=5 (50 t+ 6 ) . The impedance of the circuit and the phase differenc 2026 Full Alternating Current list All MHT CET Medical PYQs