# Malaysia SPM Form 5 Physics - Electricity

1.1 Electric Charge
1.2 Electric Current
1.3 Potential Difference
1.4 Ohm's Law & Resistance
2.1 Circuit - Resistance
2.2 Circuit - Current
2.3Circuit - Potential Difference
3.1 Electromotive Force (E.M.F.)
4.1 Electrical Energy and Power

# Current

The SPM Physics Workbook is developed under the One-School.net Free Books Project. The content of this book is strictly follow Malaysia SPM (Sijil Pelajaran Malaysia) syllabus. The aim of this project is to provide a complete electronic supplementary network for students to develop self-learning skills by breaking the spoon-feed rituals and to encourage them to compile educational information from the Internet.
1) What is electric current?

 Electric current is flow of charge particles in a conductor. Electric current is the motion of electrons in a conductor. Electric current is the rate of flow of charge.

2)Which of the followings are the units of current?

I. Volt
II. Volt per second
III. Ampere
IV. Coulomb per second

 I only II and III only III and IV only III only

3) Which of the followings show the correct connection of an ammeter to measure the current passes through a resistor?

 P only P and Q only P, Q and R only S only

4) Which of the following electric component can be used to control the magnitude of current in a circuit?

 Ammeter Voltmeter Ohmmeter Rheostat

5) A 30C of electric charge passing through a point in a conductor in 15 seconds. Calculate the electric current in the conductor.

 1A 2A 0.5A 5A

6) A current of 0.5A is flowing through a conductor. How long does it take for 20C of charge to pass through the conductor?

 5s 10s 40s 50s

7) An electric current of 50mA flows through a fan for 10 seconds. Calculate the total electric charge passes through the fan in this period.

 0.5C 5C 50C 500C

8) A battery can supply a current of 0.5 A for 2 hours .What is the amount of charge stored in the battery?

 1C 60C 3600C 7200C