मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता १२

What is meant by wattles current?

Advertisements
Advertisements

प्रश्न

What is meant by wattles current?

टीपा लिहा
Advertisements

उत्तर

The component of current (IRMS sin φ), which has a phase angle of \[\frac{\pi}{2}\] with the voltage is called reactive component. The power consumed is zero. So that it is also known as ‘Wattless’ current.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Electromagnetic Induction And Alternating Current - Evaluation [पृष्ठ २६०]

APPEARS IN

सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 4 Electromagnetic Induction And Alternating Current
Evaluation | Q II. 19. | पृष्ठ २६०

संबंधित प्रश्‍न

A resistor of 500 Ω and an inductance of 0.5 H are in series with an AC source which is given by V = `100 sqrt2` sin (1000 t). The power factor of the combination is ______.


Prove that an ideal capacitor in an AC circuit does not dissipate power


An AC source generating a voltage e = e0sinωt is connected to a capacitor of capacitance C. Find the expression for the current i flowing through it. Plot a graph of e and i versus ωt.


A light bulb is rated 100W for 220 V AC supply of 50 Hz. Calculate

  1. resistance of the bulb.
  2. the rms current through the bulb

An alternating e.m.f. of 0.2 V is applied across an LCR series circuit having R = 4 `Omega`, C = 80 µF and L = 200 mH. At resonance the voltage drop across the inductor is ____________.


In a series LR circuit XL = R and power factor of the circuit is P1. When capacitor with capacitance C such that XL= XC is put in series, the power factor becomes P2. The ratio `"P"_1/"P"_2` is ______. 


Two unknown resistances are connected in two gaps of a meter-bridge. The null point is obtained at 40 cm from left end. A 30 Ω resistance is connected in series with the smaller of the two resistances, the null point shifts by 20 cm to the right end. The value of smaller resistance Ω is ______.


In series LCR circuit R = 18 Ω and impedance is 33 Ω An rms voltage 220V is applied across the circuit. The ture power consumed in AC circuit is ______.


The effective capacitor between A and B in the following circuit is ______.


Explain the theory of an AC circuit with a resistor. 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×