हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

A capacitor acts as an infinite resistance for ______.

Advertisements
Advertisements

प्रश्न

A capacitor acts as an infinite resistance for ______.

विकल्प

  • DC

  • AC

  • DC as well as AC

  • neither AC nor DC

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

A capacitor acts as an infinite resistance for DC.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 39: Alternating Current - MCQ [पृष्ठ ३२९]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
अध्याय 39 Alternating Current
MCQ | Q 1 | पृष्ठ ३२९

संबंधित प्रश्न

Show that the current leads the voltage in phase by π/2 in an AC circuit containing an ideal capacitor ?


The AC voltage across a resistance can be measured using


A bulb rated 60 W at 220 V is connected across a household supply of alternating voltage of 220 V. Calculate the maximum instantaneous current through the filament.


The dielectric strength of air is 3.0 × 106 V/m. A parallel-plate air-capacitor has area 20 cm2 and plate separation 0.10 mm. Find the maximum rms voltage of an AC source that can be safely connected to this capacitor.


A transformer has 50 turns in the primary and 100 in the secondary. If the primary is connected to a 220 V DC supply, what will be the voltage across the secondary?


Compare resistance and reactance.


When an ac voltage of 220 V is applied to the capacitor C, then ______.


The electric mains supply in our homes and offices is a voltage that varies like a sine function with time such a voltage is called ... A... and the current driven by it in a circuit is called the ... B... Here, A and B refer to ______.

A capacitor has capacitance C and reactance X, if capacitance and frequency become double, then reactance will be ______.


When an AC voltage of 220 V is applied to the capacitor C ______.

  1. the maximum voltage between plates is 220 V.
  2. the current is in phase with the applied voltage.
  3. the charge on the plates is in phase with the applied voltage.
  4. power delivered to the capacitor is zero.

In the LCR circuit shown in figure, the ac driving voltage is v = vm sin ωt.

  1. Write down the equation of motion for q (t).
  2. At t = t0, the voltage source stops and R is short circuited. Now write down how much energy is stored in each of L and C.
  3. Describe subsequent motion of charges.


A resistor of 50 Ω, a capacitor of `(25/pi)` µF and an inductor of `(4/pi)` H are connected in series across an ac source whose voltage (in volts) is given by V = 70 sin (100 πt). Calculate:

  1. the net reactance of the circuit
  2. the impedance of the circuit
  3. the effective value of current in the circuit.

A 40 µF capacitor is connected to a 200 V. 50 Hz ac supply. The rms value of the current on the circuit is, nearly ______.


In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to constitute the circuit?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×