A capacitor of capacitance 'C' is being charged by connecting it … - Vidyadip

Question

A capacitor of capacitance 'C' is being charged by connecting it across a dc source along with an ammeter.Will the ammeter show a momentary deflection during the process of charging? If so, how would you explain this momentary deflection and the resulting continuity of current in the circuit? Write the expression for the current inside the capacitor.

✓

Answer

Yes, ammeter will show a momentary deflection. The momentary deflection is due to the flow of electrons in the circuit during the charging process. During the charging process the electric field between the capacitor plates is changing and hence a displacement current flows in the gap. Hence we can say that there is a continuity of current in the circuit.
Expression $\text{I}_{d} = \in_{0}\frac{\text{d}\phi}{\text{dt}}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Electrostatic Potential and Capacitance→Electrostatic Potential and Capacitance — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

An alpha particle is projected vertically upward with a speed of $3.0 \times 10^4km\ s^{-1}$ in a region where a magnetic field of magnitude 1.0T exists in the direction south to north. Find the magnetic force that acts on the α-particle.

Describe briefly, with the help of a diagram, the role of the two important processes involved in the formation of a p-n junction.

State Lenz’s Law.
A metallic rod held horizontally along east-west direction, is allowed to fall under gravity. Will there be an emf induced at its ends? Justify your answer.

List all the forces acting on:

The pulley A.
The boy and.
The block C in figure.

Two cells of emf 10V and 2V and internal resistance $10\Omega$ and $5\Omega$ respectively, are connected in parallel as shown. Find the effective voltage across R.

With the help of suitable diagram explain the real depth and apparent depth.

Calculate the shortest wavelength of the spectral lines emitted in Balmer series.[Give Rydberg constant, $R=10^7 \mathrm{~m}^{-1}$ ]

X-ray and visible light travel at the same speed in vacuum. Do they travel at the same speed in glass?

Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.

Cell containing vacancy	K	L	M
Energy in keV	69.5	11.3	2.3

The density of water at 4°C is supposed to be $1000kg\ m^3$. Is it same at sea level and at high altitude?