What advantage does a circuit-breaker have over a fuse in an electric circuit?
11TNA vs 11THG IGCSE Electricity MEGA QUIZ

Quiz
•
Physics
•
10th - 11th Grade
•
Hard
Laura Rogers
Used 3+ times
FREE Resource
34 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A circuit-breaker provides an alternate route for the current to flow
A circuit-breaker can be reset
A fuse can be reset
A fuse is more expensive
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An appliance works at 3A. What is the best option for a fuse in the circuit connected to this appliance and why?
5A, so that the fuse does not blow when the appliance is used normally
7A, since it allows a current much larger than needed for the appliance to flow in the circuit
2A, so that the fuse blows when the appliance is used normally
3A, since the fuse blows at the same value of current that the appliance needs
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a metal wire is heated externally, its resistance will...?
Stay constant
Oscillate
Increase
Decrease
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the equation linking charge, current and time?
current = time x charge
charge = current x time
charge = current / time
current = 1/2(time) x charge
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Charging takes 110 minutes and causes a total charge of 180 000 C to pass through the battery. What is the average charging current in the battery?
1636 A
163.6 V
27 A
27 V
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The current in a motor is 2.1 A and the potential difference across it is 12V. The motor takes 1.5 seconds to lift a mass. What is the energy transferred to the motor as it lifts the mass?
85 J
3.8 J
38 J
8.5 J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The current in a motor is 2.1 A and the potential difference across it is 12V. The motor takes 1.5 seconds to lift a mass. What is the energy transferred to the motor as it lifts the mass?
85 J
3.8 J
38 J
8.5 J
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