Advertisements
Advertisements
Question
Define fuse.
Advertisements
Solution
Electric fuse is a safety device which is used in household wiring and in many appliances.
APPEARS IN
RELATED QUESTIONS
An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
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?
Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.
Why does tungsten metal used to make solenoid type coil in an electric bulb?
These days when current in the circuit suddenly increases _______ switches are used.
Write two devices based on the heating effect of electric current.
The heating element of an electric iron is made up of:
Name a few appliances which work on the basis of the heating effect of current.
The graph of voltage vs current for four different materials is shown below.
Which of these four materials would be used for making filament of bulb?
