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 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?
3.
What is the definition of one volt (1 V)?
4.
An electric current of 0.8 A flows through a lamp for 3 minutes. What is the total electric charge that passes through the lamp?
5.
The main purpose of a fuse in an electrical appliance is to:
6.
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)?
7.
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?
8.
A toaster has a heating element with a resistance of 40Ω. If it is connected to a 240 V power supply, what is its power dissipation?
9.
Nichrome is often used for heating elements in appliances like toasters and electric kettles. Which property of nichrome makes it suitable for this purpose?
10.
A conductor is considered 'non-ohmic' if:
