Advertisements
Advertisements
Question
What is meant by internal resistance of a cell?
Advertisements
Solution
The resistance offered by the electrolyte inside the cell to the flow of current is called internal resistance of cell.
RELATED QUESTIONS
<p> Define the unit of electric current (or Define ampere).
An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:
(a) 0.5 Ω
(b) 6 Ω
(c) 12 Ω
(d) 24 Ω
In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.
- A and B
- A and C

A 720 W heater operates from a 220 V line voltage. Calculate:
(a) The electrical energy consumed by the heater in 3 h.
(b) The cost of electrical energy consumption at the rate of 60 paise per kWh.
A 3 pin mains plug is fitted to the lead for a 1 kW electric kettle to be used on a 250 V A.C. supply. Which of the following statements is NOT correct?
(a) A 13 A fuse is the most appropriate value to use.
(b) The brown wire should be connected to the live side of the mains.
Define the term kilowatt - hour and state its value in S.I. unit.
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
Give the electric current unit.
