1. If a current i given by i0 sin (ωt-π/2) flows in an ac circuit across which an ac potential of E = E 0 sin ωt has been applied, then the power consumption P in the circuit will be | ||||
2. If instantaneous current is given by i= 4 cos( ωt+ø ) amperes, then the r.m.s. value of current is | ||||
3. In the adjoining ac circuit the voltmeter whose reading will be zero at resonance is ![]() ![]() | ||||
4. A LC circuit is in the state of resonance. If c = 0.1 μF and L = 0.25 henry. Neglecting ohmic resistance of circuit what is the frequency of oscillations | ||||
5. When V = 100 sin ωt is applied across a series (RLC) circuit at resonance the current in resistance (R = 100Ω ) is i= io sin ωt, then power dissipation in circuit is |
Physics Questions for both High school and Senior secondary school level examinations, suitable for CBSE,ICSE ICSE and IGCSE