Alternating Current questions
577 published questions with worked solutions.
- The reactance of the coil is 10 and its resistance is 10 . It is connected to an ac source of e.m.f. 220 V. The peak value of the...
- A resistance of 10 , an inductance of 2 henry and a capacitor of 1 are connected in series with mains line of 110 V and 50 Hz....
- The average power dissipated in an A.C. circuit containing a resistance alone is
- Power consumed in an A.C. circuit is zero if it is purely
- The , in an electric circuit, is called
- The product e_ rms I_ rms is called as
- The power factor in the circuit is unity, when the circuit contains an ideal
- In an A.C. circuit the electrical energy is consumed in
- The average power in LCR series circuit is
- For purely reactive circuit containing only L or C, power factor is
- An inductance of 100 mH and a resistance of 100 are connected in series and an alternating emf of peak value 100 V, 50 Hz is...
- A capacitor of capacitive reactance 79.62 and a resistance of 100 are connected in series across a.c. source. The phase...
- Two electric appliances of power rating W_1 and W_2 at 220 V are connected in series with a source of alternating voltage e=220 2...
- What should be the capacity of a condenser to be condensed in series with a bulb of 30 volt, 10 watt if it is connected to a...
- When a coil is connected to a D.C. source of e.m.f. 12 volts, then a current of 4 amp flow in it. If the same coil is connected...
- In a series a.c. circuit R=100 , X_L=300 and X_C=200 . The phase difference between the applied emf and the current will be
- An inductance of 0.2 H and a resistance of 100 are connected to A.C. 180 V, 50 Hz supply. The apparent current flowing in the...
- It is found that the current in the circuit is 0.50 A with dc source and 0.40 A with ac source. The voltage E for dc is 120 V and...
- A coil has an inductance of 0.7 Henry and is joined in series with a resistance of 220 . When an alternating e.m.f. of 220 V at...
- A variable capacitor and an inductive coil with negligible resistance are connected in series to an a.c. voltage of value 100 V....
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