A 100Ω resistance and a capacitor of 100Ω reactance are connected in series
A 100Ω resistance and a capacitor of 100Ω reactance are connected in series across a 220V source. When the capacitor…
7 years ago
Alternating Current
The potential differences across the resistance, capacitance and inductance
The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100V respectively in an L-C-R…
7 years ago
Which of the following combinations should be selected for better tuning of an L-C-R
Which of the following combinations should be selected for better tuning of an L-C-R circuit used for communication? Options (a)…
7 years ago
A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance
A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance R is connected in…
7 years ago
The frequency of an alternating voltage is 50 cycles per second and its amplitude
The frequency of an alternating voltage is 50 cycles per second and its amplitude is 120 V. Then the r.m.s.…
7 years ago
An a.c. supply gives 30 volt r.m.s which passes through a 10Ω resistance.
An a.c. supply gives 30 volt r.m.s which passes through a 10Ω resistance. The power dissipated in it is Options…
7 years ago
A coil of self-inductance L is connected in series with a bulb B and an AC source
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the…
7 years ago
A coil has resistance 30 ohm and inductive reactance 20 ohmn at 50 Hz frequency.
A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source, of…
7 years ago
A 220 volts input is supplied to a transformer. The output circuit draws
A 220 volts input is supplied to a transformer. The output circuit draws a current of 2.0 ampere at 440…
7 years ago
A series combination of resistor (R), capacitor (C), is connected to an AC source
A series combination of resistor (R), capacitor (C), is connected to an AC source of angular frequency ω. Keeping the…
7 years ago