MODULE CODE: PASAY-S8FE-Q1-W6-D3
Name: ______________________________________________ Section: ______________________
Name of Teacher: _____________________________________ Date: _________________________
HANDS-ON ACTIVITY:
Note: The learners must be guided by their parents/guardian.
Activity 1: Current and Voltage Relationship
Objectives:
After performing this activity, you should be able to:
1. measure the electric current and voltage in a circuit using an ammeter and voltmeter
respectively; and
2. determine the relationship between electric current and voltage.
NOTE: If you cannot provide voltmeters and
ammeters, you can modify the activity by just
relating the number of dry cells or increase in
voltage with the brightness of the bulb. The
brighter the bulb, the bigger the current.
Materials:
1 ammeter
1 voltmeter
2 dry cells
2 dry cell holders
1 switch
1 bulb
4 connecting wires
1 bulb holder
Procedure:
1. Construct a simple circuit using a dry cell, a bulb,
a switch and an ammeter. Close the circuit by
turning on the switch. Observe the bulb and the
ammeter. Record the ammeter reading in Table
1. Upon completion of the task, switch off the
circuit.
Ammeter connected in a circuit with one dry cell
Q1. What is the reading on the ammeter?
1. Add another dry cell to the circuit. Record the
electric current measurement in Table 1.
Once the task is done, turn off the switch.
Table 1:
No. of batteries
1
2
Voltage (V)
Current (A)
Ammeter connected in a circuit with two dry cells
Q2. Compare the brightness of the bulb with one dry cell to its brightness when there are two dry
cells in the circuit.
Q3. What is the ammeter reading this time?
Q4. What can be inferred about the current passing through the bulb?
2. Connect the voltmeter in the circuit as shown
in Figure 5. Switch on and record the voltage
in table 1. Once the task is done, turn off the
switch.
Q5. What is the voltmeter reading?
Voltmeter connected in a circuit with one dry cell
MODULE CODE: PASAY-S8FE-Q1-W6-D3
Name: ______________________________________________ Section: ______________________
Name of Teacher: _____________________________________ Date: _________________________
3. Add another dry cell to the circuit. Record the
voltmeter reading in Table 1. Observe the
brightness of the bulb. Once the task is done,
turn off the switch.
Q6. Describe the brightness of the bulb.
Ammeter connected in a circuit with one dry cell
Q7. What is the voltmeter reading this time?
Q8. What can be inferred about the voltage across the bulb?
Q9. Refer to Table 1, how are voltage and current related?
Activity 2: Current and Resistance Relationship
Objective: To determine the relationship between electric current and resistance.
Materials:
1 ammeter
holders
2 dry cells 2
dry cell
3 bulb holders
1 switch
4 connecting wires
3 flashlight bulbs
NOTE: If you cannot provide voltmeters and
ammeters, you can modify the activity by just
relating the number of dry cells or increase in
voltage with the brightness of the bulb. The
brighter the bulb, the bigger the current.
Procedure:
1. Construct a simple circuit using one bulb, 2 dry
cells and an ammeter as shown in Figure 7.
Record the electric current measurement in Table
2. Once the task is done, turn off the switch.
2. To increase the resistance, add another bulb in
the circuit. Connect the ammeter and record the
electric current measurement in Table 2. Once the
task is done, turn off the switch.
Ammeter connected in a circuit
with one bulb and two dry cells
cell
Ammeter connected in a circuit
with two bulbs and two dry cells
3. To further increase the resistance, add another
bulb in the circuit. Connect the ammeter and record
the electric current measurement in Table 2. Once
the task is done, turn off the switch.
Table 2:
No. of bulbs
1
2
3
Current (A)
Ammeter connected in a circuit
with three bulbs and two dry cells
MODULE CODE: PASAY-S8FE-Q1-W6-D3
Name: ______________________________________________ Section: ______________________
Name of Teacher: _____________________________________ Date: _________________________
Q10. Based on Table 2, what happens to the current in the circuit as the resistance increases
(increasing of bulbs)?
4. Connect the ammeter at different points around the
circuit shown in Figure 10. Make sure that the positive
terminal of the ammeter is connected to the positive
terminal of the dry cell while the negative terminal is
connected to the negative terminal of the dry cell. Once
the task is done, turn off the switch.
Ammeter connected between two
bulbs in a circuit
Q11. Compare the current at different points in the circuit.
Q12. What can you infer about the current through the circuit?