Home
Class 12
PHYSICS
A steady current is passed for 25minutes...

A steady current is passed for 25minutes through a silver voltameter and ammeter in series and 0.059g of silver of deposited. The ammeter reads 0.3A. Find the errror, if any, in the ammeter reading, given that the E.C.E. of silver `=11.18xx10^(-7) kg C^(-1)`.

A

`+0.012A`

B

`-0.012A`

C

`+0.12A`

D

`-0.12A`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

In the following circuit A, B and C are three ammeters. 0.5A current is shown by ammeter B. Find the currents passing through ammeters A and C.

A copper voltameter is connected in series with a coil of resistance 100Omega . A steady current flowing in the circuit for 10 minutes, gives a deposit of 0.1 g of copper in the voltameter. Calculate the heat generated in the resistance coil. (ECE of Cu 3.3xx10^(-7)kg//C )

A galvanometer having a coil resistance of 60 Omega shows full scale defection when a current of 1.0 A passes thoguth it. It can vbe convered into an ammeter to read currents up to 5.0 A by

A dry cell of emf 1.5V and internal resistance 0.10 Omega is connected across a resistor in series with a very low resistance ammeter: When the circuit is switched on, the ammter reading settles to a steady value of 2.0A. What is the steady (a) rate of chemical energy consumption of the cell, (b) rate of energy dissipation inside the cell, (c) rate of energy dissipation inside the resistor, (d) power output of the source?

A current of 6 A passes through the wire shown in the figure. Find the magnitude of magnetic field at point C. The radius is 0.2 m. (mu_(0)=4pixx10^(-7)TmA^(-1))

An electric current is passed through three cells in series containing respectively solutions of copper sulphate, silver nitrate and potassium iodide. What weights of silver and iodine will be liberated while 1.25 g of copper is being deposited ?

An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it, its resistance at room temperature (27.0^(@)C) is found to be 75.3 Omega . When the toaster is connected to a 230 V supply, the current settles, after a few seconds, to a steady value of 2.68 A. What is the steady temperature of the nichrome element ? The temperature coefficient of resistance of nichrome averaged over the temperature range involved , is 1.70 xx 10^(-4) ""^(@) C^(-1) .

An electric toaster uses nichrome for its heating element. When a negllgibly small current pases through it, its resistance at room temperature (27.0^(@)C) is found to be 75.3 Omega. When the toaster is connected to a 230 V supply, the current settles, after a few seconds, to a steady value of 2.68A. What is the steady temperature of the nichrome element ? The temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1.70 xx 10 ^(-4)"" ^(@)C ^(-1).

A cylindrical vessel of height 500mm has an orifice (small hole) at its bottom. The orifice is initially closed and water is filled in it up to height H. Now the top is completely sealed with a cap and the orifice at the bottom is opened. Some water comes out from the orifice and the water level in the vessel becomes steady with height of water column being 200mm. Find the fall in height(in mm) of water level due to opening of the orifice. [Take atmospheric pressure =1.0xx10^5N//m^2 , density of water=1000kg//m^3 and g=10m//s^2 . Neglect any effect of surface tension.]