ICSE Class 10 Alternating Current — Mock Test

Free online mock test for Alternating Current (ICSE Class 10 Physics) — 81 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.A charged 30 microfarad capacitor is connected to a 27 mH inductor. The angular frequency of free oscillations of the circuit is given by:
   • A.1 / sqrt(27 x 10^-3 x 30 x 10^-6) rad/s
   • B.sqrt(27 x 10^-3 x 30 x 10^-6) rad/s
   • C.1 / (27 x 10^-3 x 30 x 10^-6) rad/s
   • D.27 x 10^-3 x 30 x 10^-6 rad/s
2. 2.In an ideal transformer, the secondary voltage Vs is related to the primary voltage Vp by:
   • A.Vs = (Ns / Np) Vp
   • B.Vs = (Np / Ns) Vp
   • C.Vs = (Ns + Np) Vp
   • D.Vs = Vp
3. 3.The capacitive reactance XC of a capacitor of capacitance C in an ac circuit of angular frequency omega is given by:
   • A.XC = 1 / (omega C)
   • B.XC = omega C
   • C.XC = omega / C
   • D.XC = C / omega
4. 4.A 15.0 microfarad capacitor connected to a 220 V, 50 Hz source has a capacitive reactance of 212 ohm. The rms current in the circuit is approximately:
   • A.1.04 A
   • B.2.08 A
   • C.0.52 A
   • D.1.47 A
5. 5.In a series LCR circuit at resonance, the power dissipated is:
   • A.Maximum, equal to I squared R
   • B.Zero
   • C.Minimum, less than at any other frequency
   • D.Negative