Advertisements
Advertisements
Question
Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.
Advertisements
Solution
Given:
Charge (Q) = 96000 C,
Time (t) = 2h,
Potential difference (V) = 40V
The heat generated,
H = VIt
= `"V" xx "Q"/"t" xx "t"`
= V × Q
= 40 × 96000
= 3840000 J
APPEARS IN
RELATED QUESTIONS
Name any two effects of electric current.
When current is switched ‘on’ in a room heater, it ______.
Give Scientific reason
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster etc, an alloy such as Nichrome is used, not pure metals.
Identify the figure and give its use.
Solve the following example.
Two tungsten bulbs of wattage 100 W and 60 W power work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?
A coil of an alloy _______ is used in electric heater cooker as a resistor.
Write scientific reason.
A coil made up of alloy Nichrome is used in the electric heater cooker as a resistor.
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of:
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
An electric cell produces electricity from the ______ ______ in it.
