Advertisements
Advertisements
Question
State two factors on which the electrical energy consumed by an electrical appliance depends.
Solution
Two factors on which electrical energy consumed by an electrical appliance depends on are:
(1) power
(2) time
APPEARS IN
RELATED QUESTIONS
Name two gases which are filled in filament type electric light bulbs.
A bulb with rating 250 V, 100 W is connected to a power supply of 220 V situated 10 m away using a copper wire of area of cross-section 5 mm2. How much power will be consumed by the connecting wires? Resistivity of copper = 1.7 × 10−8 Ωm
An electric bulb, when connected across a power supply of 220 V, consumes a power of 60 W. If the supply drops to 180 V, what will be the power consumed? If the supply is suddenly increased to 240 V, what will be the power consumed?
A device is used to transform 12 V a.c. to 200 V a.c. What is the name of this device? Name the principle on which it works.
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
How is the amount of heat produced calculated due to the passage of current in a metallic conductor? Derive an expression for it.
State other bigger units of electric power and express them in watt.