Question

3. Which of the following devices works on the magnetic effect of electric current?
(a) Electric iron
(b) Electric bulb
(c) Electric bell
(d) Electric kettle
4. Which of the following is a safety device?
(a) Electric iron
(b) Electric bulb
(c) Electric bell
(d) Electric fuse
B. Fill in the blanks :
1. A safety device, based on the heating effect of current is the Electric fisse
2. We prefer a wire of nichome for making the heating element; in domestic
appliances like electric iron, electric heater, electric toaster etc.
3. When current is switched 'on' in a room heater, it converts heat
energy
into electrical energy.
4. Electromagnet should have a rapid
and
action like
electric switches.
5. A fuse wire is an alloy of lead and mel ting Dating​

Answer 1

Answer:

3. (c)electric bell

4. (d)electric fuse

1.

Answer 2

Answer:

3.c) electric bell

4.d) electric fuse