Name:__________________________________ Grade & Sec.:___________ Score:________
Teacher:________________________________ Date:__________________ Ratiing:_______
Activity 1
Current and voltage
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.
Materials Needed:
1 ammeter 1 voltmeter
2 dry cells (1.5 V each) 2 dry cell holders
4 connecting wires 1 switch
1 bulb 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.
Q1. What is the reading on the ammeter?
2. Add another dry cell to the circuit. Record the electric current measurement in
Table 1. Once the task is done, turn off the switch.