PHYSICS
JAMB 2005 - Question 21
Physics 2005 JAMB Past Questions - Question 21: an electric device is rated 2000w 250v the correct fuse rating of the device is
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
A
Explanation
for the device rated 2000 W, 250V, implies that current I flowing is given by the relation power = IV I = power = 2000 V 250 = 8A
To determine the correct fuse rating for the electric device rated at 2000 watts and 250 volts, you can use the formula:
Fuse Rating (in amperes) = Power (in watts) / Voltage (in volts)
In this case:
Fuse Rating (in amperes) = 2000 watts / 250 volts = 8 amperes
So, the correct fuse rating for the device is 8 amperes. You should use an 8A fuse to protect the device from excessive current. Make sure the fuse is rated for at least 8A to prevent overloading the circuit and damaging the device.
Frequently Asked Questions
Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.
You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.
Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.
Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.
Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.