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

Displacement Current Goes Through the Gap Between the Plates of a Capacitor When the Charge of the Capacitor - Physics

Advertisements
Advertisements

प्रश्न

Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor

(a) increases
(b) decreases
(c) does not change
(d) is zero

टिप्पणी लिखिए

उत्तर

(a) increases
(b) decreases

Displacement current inside a capacitor,

`i_d = ∈_0 (dΦ_E)/dt` ,  Where

`Φ_E` is the electric flux inside the capacitor.
Up to the time the electric flux changes, there will be a displacement current. This is possible when the charge on a capacitor changes. Therefore, the displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor or electric field increases or decreases inside the capacitor.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 18: Electromagnetic Waves - MCQ [पृष्ठ ३३९]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 18 Electromagnetic Waves
MCQ | Q 2 | पृष्ठ ३३९

संबंधित प्रश्न

Suppose that the electric field amplitude of an electromagnetic wave is E0 = 120 N/C and that its frequency is v = 50.0 MHz.

  1. Determine B0, ω, k, and λ.
  2. Find expressions for E and B.

A plane electromagnetic wave is travelling through a medium along the +ve z-direction. Depict the electromagnetic wave showing the directions of the oscillating electric and magnetic fields.


In a microwave oven, the food is kept in a plastic container and the microwaves is directed towards the food. The food is cooked without melting or igniting the plastic container. Explain.


The energy contained in a small volume through which an electromagnetic wave is passing oscillates with


Consider the situation of the previous problem. Define displacement resistance Rd = V/idof the space between the plates, where V is the potential difference between the plates and id is the displacement current. Show that Rd varies with time as `R_d = R(e^(t"/"tau) - 1)` .


Which of the following is an electromagnetic wave?


Which of the following is NOT true for electromagnetic waves?


Write notes on Gauss' law in magnetism.


What are Fraunhofer lines? How are they useful in the identification of elements present in the Sun?


Write a short note on the microwave.


Write a short note on the visible spectrum.


Explain the Maxwell’s modification of Ampere’s circuital law.


A transmitter consists of LC circuit with an inductance of 1 μH and a capacitance of 1 μF. What is the wavelength of the electromagnetic waves it emits?


In plane electromagnetic wave propagation velocity v, wavelength λ and frequency ν are related by ______.


A man standing on the road has to hold his umbrella at 30° with the vertical to keep the rain away. He throws away the umbrella and starts, running at 10 km/h and finds raindrops hitting his head vertically. The speed of the raindrops with respect to the road is ______.


Which one of the following does not represent simple harmonic motion? Here y denotes the instantaneous displacement. Here, A and B are constants and co is the angular frequency.


Which of the following are not electromagnetic waves?


Which of the following type of radiations are radiated by an oscillating electric charge?


In a plane electromagnetic wave, the direction of electric field and magnetic field are represented by `hat"k"` and 2`hat"i" - 2hat"j"`, respectively. What is the unit vector along direction of propagation of the wave.


Name the electromagnetic wave/radiation which is used to study crystal structure.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×