SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 7 Set 1
Elektrik (English)
KUIZ INI MENGANDUNGI 10 SOALAN
1. A battery does 180 J of work to move 45 C of charge through a component in a circuit. What is the potential difference across the component?
2. A microwave oven operates on a 240 V supply and draws a current of 5.5 A. Which of the following standard fuses (1 A, 5 A, 10 A, 13 A) is the most appropriate choice for this appliance?
3. A graph of potential difference (V) on the y-axis against current (I) on the x-axis is plotted for a constantan wire. What does the gradient of this graph represent?
4. The main purpose of a fuse in an electrical appliance is to:
5. Which of the following changes would increase the electrical resistance of a metallic conductor?
6. What is the definition of one volt (1 V)?
7. An electric heater has a power rating of 1500 W. How much electrical energy does it consume in 10 minutes?
8. Nichrome is often used for heating elements in appliances like toasters and electric kettles. Which property of nichrome makes it suitable for this purpose?
9. What is the primary reason for coiling the wire of a heating element in an appliance like an electric kettle?
10. Two copper wires, A and B, have the same length. Wire A has twice the diameter of wire B. How does the resistance of wire A (RA) compare to the resistance of wire B (RB)?
