A choke coil has negligible resistance. ...

A choke coil has negligible resistance. The alternating potential drop across it is 220 volt and the current is `5 mA`. The power consumed is

A

`220 xx (5)/(1000) W`

B

`(220)/(5) W`

C

zero

D

`2.20 xx 5 W`

Text Solution

Verified by Experts

The correct Answer is:

3

Average power is zero

Topper's Solved these Questions

ALTERNATING CURRENT
NARAYNA|Exercise LEVEL - II (C.W)|11 Videos
ALTERNATING CURRENT
NARAYNA|Exercise LEVEL - III (C.W)|24 Videos
ALTERNATING CURRENT
NARAYNA|Exercise Assertion & Reason|14 Videos
ATOMIC PHYSICS
NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

Similar Questions

Explore conceptually related problems

An Ac circuit with f=1000 Hz consists of a cail of 200 mH and negligible resistance. Calculate the voltage across the coil, if the effective current of 5 mA is flowing.

A choke coil in a transformer of negligible resistance carries 5 mA current when it is operated at 220 V. The loss of power in the choke coil is –

A 20volts AC is applied to a circuit consisting of a resistance and a coil with negligible resistance. If the voltage across the resistance is 12V , the voltage across the coil is

A d.c motor has internal resistance 4 ohms . It is operated at 220 volts and draws 5 ampere current . The useful mechanical power developed is :-

A choke coil is preferred to a resistance for reducing current in an ac circuit because .

An alternating voltage is connected in series with a resistance R and inductance L if the potential drop across the resistance is 200V and across the inductance is 150V , then the applied voltage is

A coil of inductance 5.0 mH and negligible resistance is connected to an alternating voltage V=10 sin (100t) . The peak current in the circuit will be:

A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be

NARAYNA-ALTERNATING CURRENT-LEVEL - I (C.W)

The peak value A.C is 2 sqrt(2)A. It's apparent value will be
Text Solution
|
Alternating current in circuit is given by I = I(0) sin 2 pi nt. Then ...
Text Solution
|
Using an ac voltmeter, the potential difference in the electrical line...
Text Solution
|
A mixer of 100 Omega resistance is connected to an A.C source of 200 V...
Text Solution
|
The equation of an alternating voltage is E = 220 sin (omega t + pi //...
Text Solution
|
A steady P.D of 10 V produces heat at a rate 'x' in resistor. The peak...
Text Solution
|
An alternating voltage E=200sqrt(2) sin (100 t)V is connected to a 1 m...
Text Solution
|
A 120 volt AC source is connected across a pure inductor of inductance...
Text Solution
|
A transformer steps an A.C voltage from 230 V ot 2300 V. If the number...
Text Solution
|
The transformer ratio of a transformer is 5. If the primary voltage of...
Text Solution
|
A step-up transformer works on 220 V and gives 2 A to an external resi...
Text Solution
|
A coil of self-inductance ((1)/(pi)) H is connected is series with a 3...
Text Solution
|
A condenser of 10 mu F and an inductor of 1 H are connected in series ...
Text Solution
|
A 100 km telegraph wire hasd capacity of 0.02 mu F//km, if it carries ...
Text Solution
|
In an LCR series circuit the rms voltages across R,L and C are foundd ...
Text Solution
|
In the circuit shown, a 30 V d.c. source gives a current 2.0 A as reco...
Text Solution
|
A choke coil has negligible resistance. The alternating potential drop...
Text Solution
|
In an AC circuit, the instantaneous values of e.m.f and current are e...
Text Solution
|
In a black box of unknown elements (L or R or any other combination), ...
Text Solution
|
The voltage time (V-t) graoh for triangular wave having peak value (V0...
Text Solution
|