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Purpose: Students can understand the working principle of
electric bell
Solenoid is circular-shaped coil conductor length. The magnetic
field generated by the
solenoid will be greater than that posed by a circular
conductor, let alone by a straight
conductor. If the solenoid electrified it will generate a
magnetic field. Solenoid magnetic field
generated electricity flowing strongly dependent on electric
currents and the number of coils.
The lines of magnetic force on the solenoid is a combination of
lines of magnetic force of the
coiled wire.
MAKE A ELECTRIC BELL
JOBSHEET
A Email wire wound around bolts (E) The bell beater stalks (can
be from
the the hard zinc) (A)
Bell switch (K) Nail / screw (T) 5. 9V Battery Box (U) Bicycle
bell Board 40cm x 30cm cable
Things You'll Need :
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1. Plug the cable to the battery
2. plug one cable from the battery into the switch3. Wrap the
wire on the nail4. Take the other cable connection from the the
switch to the coil wire on a nail5. Plug other parts of the winding
wire with zinc The bell beater and electrical junction
and circuit breaker
6. Fasten wire at the end of the The bell beater7. plug the
cable on the other side bolts disconnect the battery to the
electric current8. Patch The bell on board9. Patch circuit wiring
on the board10. The bell is ready for use
Experimental Procedure
Answer the following questions based on your practicum
results
1. How many windings which allows to make the lights on? Why is
that?2. If you open the switch, whether the bell can serve? Why is
that?
Summary
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Analysis
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Battery Battery holder with connectors 3 coated wires with
crocodile
Things youll need
Place the battery in the battery holder. Point out to pupils the
negative and positiveterminals of the battery and explain that
direct current flows from the positive terminal to a
negative terminal in a complete circuit.
Connect one of the coated wires to the connector at the positive
end of the battery and thenconnect the other end of the wire to the
one of the connectors on the switch.
Put the switch in the "Off" position.Connect one of the coated
wires to the other connector of the switch and connect the
other
end of the wire to one of the connectors on the electric
bell.
Complete the circuit by connecting the final wire to the other
connector on the bell and tothe negative terminal of the
battery.
Have the students experiment with removing wires from the
circuit and observing when acircuit is complete and incomplete.
Continue the project by having the student build their own
circuits with electric bells in series.connected together in a
chain on a singly branched circuit, or in parallelconnected on
individual branches of the main circuit.Have the student to observe
the difference between the two types of connections.
Experimental Procedure
