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- 1. Multiple Choice
Who discovered the magnetic field of electric current?
Hans Christin Oyster
James Kristin Oersted
Lans Christin Oestred
Hans Christian Oersted
- 2. Multiple Choice
Where can the key or switch be placed in the circuit?
The left side of the battery
The right side of the battery
Can be placed anywhere in the circuit
Near the positive terminal of the bulb
- 3. Multiple Choice
The amount of heat produced in a wire depends on
material
length
thickness
all of these
- 4. Multiple Choice
When an electric current flows through a copper wire AB as shown in Figure, the wire:
deflects a magnetic needle placed near it
becomes red hot
gives electric shock
behaves like a fuse
- 5. Multiple Choice
The coil of wire contained in an electric heater is known as
component
element
circuit
spring
- 6. Multiple Choice
Which one of the following is based on the heating effect of current?
Geyser
Hair-dryer
Electric Kettle
All of the options
- 7. Multiple Choice
In making a battery
(a) the positive terminal of one cell is connected to the negative terminal of the next cell
(b) the positive terminal of one cell is connected to the positive terminal of the next cell
(c) the negative terminal of one cell is connected to the negative terminal of the next cell
(d) none of the above
a
b
c
d
- 8. Multiple Choice
A battery is a combination of
(a) only single cell
(b) only two cells
(c) two or more cells
(d) None of the above
a
b
c
d
- 9. Multiple Choice
Our body is a ……………… of electricity.
Good Conductor
Bad Conductor
Bad Insulator
Good Insulator
- 10. Multiple Choice
When the switch is on the circuit from the positive to negative terminal is complete
True
False
- 11. Multiple Choice
Wires made from some special materials melt quickly and break when a large electric current passes through it.these wires are used to make
Fuses
Electric fuses
A&B
Electromagnet
- 12. Multiple Choice
·Who was the first person to notice the deflection of compass needle everytime the current passes through the wire.
Hans Christian Andersen
Hans Christian oersted
Hans Christian mandorson
None of the above
- 13. Multiple Choice
When an electric current flows through the wire it gets heated it is known as the heater
True
False
- 14. Multiple Choice
Electromagnets could be used in particular devices
TRUE
FALSE
- 15. Multiple Choice
When does an electromagnet lose its magnetic Property?
When current is very high
When its switched off
When heat is very high
When current is switched on
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