Question

9.
to our homes?
1. A dry cell converts chemical energy into
a) Mechanical energy
b) Heat energy
c) Electrical energy
d) Lightenergy
()
2. Negative terminal of a dry cell is formed by
a) Zinc container b) Carbon rod
c) Graphite rod d) Both a and b
3. The positive terminal of a dry cell is formed
by
a) Zinc container b) Carbon rod
c) Graphite rod d) Both a and b
()
4. An electric circuit can be represented by
a) Switches b) Bulbs
c) Symbols d) Both bando C)
5. When electricity flows through only one
path, it is called
a) Series circuit b) Parallel circuit
c) Both a and b d) None
( )
6. In parallel circuit, electricity passes through
a) One path b) Two paths
c) Three paths d) Two to many
(
7. What will happen when one bulb in series
circuit gets disconnected?
a) Other bulbs will glow
b) Only two bulbs will glow
c) No bulb will glow
d) Botha and b
()
8. What will happen when one bulb of a parallel
circuit gets disconnected?
a) Nothing will happen
b) Nothing will happen to other bulbs
c) Only two bulbs will glow
d) Only three bulbs will glow
()
Device used to open or close a circuit is called
a
a) Fuse
b) Switch
c) Bulb
d) Cell
10. A safety device used to protect electric circuit
is called a
a) Fuse
b) Switch
c) Bulb
d) Cell
11. Smaller line in a symbol of cell indicates.
a) Zero terminal
b) Negative terminal
c) Positive terminal
d) None
12. Heating effect of electricity is used in
a) Electriciron b) Electric heater
c) Electric cooker d) a.bandc
( )
13. Heating element of a heater is made of
a) Nickel b) Nichrome
c) Tungsten d) Copper
14. The amount of heat produced in an electric
heater depends on
a) Length b) Thickness
c) Material
d) a.bandc
15. Michael Faraday invented
a) M.C.B
b) Dynamo
c) Transformer
d) Both bandc
16. M.C.B stands for
a) Micro Circuit Breaker
b) Miniature Circuit Band
c) Miniature Circuit Breaker
d) Mini Circuit Breaker
50.
Practice Book
TM
71​

Answer 1

Answer:

lkm

Explanation: