This course contains four modules:

• Electric Current
• Electromotive Force and Potential Difference
• Resistance
• Resistivity

By the end of this course, you will be able to:

• State that current is the rate of flow of charge and is measured in amperes (A)
• Distinguish between conventional current and electron flow
• Recall and apply the relationship charge = current x time to new situations or to solve related problems
• Draw electric circuit diagrams
• Define electromotive force (e.m.f.) as the work done by a source in driving unit charge around a complete circuit
• Calculate the e.m.f. where several sources are arranged in series
• State that the e.m.f. of a source and the potential difference (p.d.) across a circuit component are measured in volts
• Define the p.d. across a component in a circuit as the work done in moving unit charge through the component
• State the definition that resistance = p.d./ current
• Apply the relationship R=V/I to new situations or to solve related problems
• Describe an experiment to determine resistance of a metallic conductor using a voltmeter and an ammeter, and making the necessary calculations
• State Ohm’s Law
• Describe the effect of temperature increase on the resistance of a metallic conductor
• Sketch and interpret the I-V characteristic graphs for a metallic conductor at constant temperature, for a filament lamp and for a semi-conductor diode
• State that the resistance R of a wire varies proportionally with the length l and is inversely proportional to the cross sectional area A of the wire

This course is available to all Pathlight School students.

Pathlight School students can enrol in this course. Login to LearnforLife.sg is required.