SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 7 Set 1
Elektrik (English)
KUIZ INI MENGANDUNGI 10 SOALAN
1.
An electric heater has a power rating of 1500 W. How much electrical energy does it consume in 10 minutes?
2.
A conductor is considered 'non-ohmic' if:
3.
The main purpose of a fuse in an electrical appliance is to:
4.
Nichrome is often used for heating elements in appliances like toasters and electric kettles. Which property of nichrome makes it suitable for this purpose?
5.
Which statement correctly describes the relationship defined by Ohm's Law for an ohmic conductor?
6.
What is the primary reason for coiling the wire of a heating element in an appliance like an electric kettle?
7.
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?
8.
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)?
9.
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?
10.
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?
