Advertisements
Advertisements
Question
Unscramble the following words:
SFEU
Advertisements
Solution
FUSE
APPEARS IN
RELATED QUESTIONS
Why does tungsten metal used to make solenoid type coil in an electric bulb?
Write the mathematical expression for Joule’s law of heating.
In an electric bulb, coil of _______ metal is used.
Write scientific reason.
A coil made up of alloy Nichrome is used in the electric heater cooker as a resistor.
An electric iron draws a current of 4 A when connected to 220 V mains. Its resistance must be:
(a) Observe the diagram given below and state whether the bulb will glow or not when we switch on K.

(b) Is it safe to handle the bulb when the switch is OFF?
(c) Give a reason for your answer in (b).
When a switch is in OFF position,
- circuit starting from the positive terminal of the cell stops at the switch.
- circuit is open.
- no current flows through it.
- current flows after some time.
Choose the combination of correct answer from the following.
An MCB can be used instead of a fuse in an electrical circuit.
______ wire is used in the filament of the bulbs.
What is the heating effect of electric current?
