Advertisements
Advertisements
प्रश्न
Name any two effects of electric current.
उत्तर १
The two effects of electric current are:
- Heating effect of electric current.
- Magnetic effect of electric current.
उत्तर २
Electric current has the following effect:
- Electric current can give rise to heating and lighting.
- Electric current can convert a straight conductor into a temporary magnet.
APPEARS IN
संबंधित प्रश्न
Why is the tungsten used almost exclusively for filament of electric lamps?
When current is switched ‘on’ in a room heater, it ______.
An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
(b) How much energy is transferred to the heater each second?
Why does the connecting cord of an electric heater not glow hot while the heating element does?
Derive the expression for the heat produced due to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is this relation known?
The elements of electrical heating devices are usually made of:
(a) tungsten
(b) bronze
(c) nichrome
(d) argon
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
What is the heating effect of electric current?
Explain the importance/uses of fuse wire.
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
