Electricity is supplied to a school along a cable of total resistance 0.5\(\Omega\) with the...

JAMB 1998

Electricity is supplied to a school along a cable of total resistance 0.5\(\Omega\) with the maximum current drawn from the mains as 100A. The maximum energy dissipated as heat for 1 hr is

A. 3.6 x 10³J
B. 5.0 x 10³J
C. 3.0 x 10⁵J
D. 1.8 x 10⁷J

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Your School's Whatsapp Group - Join Us now

Correct Answer: Option D

Explanation

Elect. energy = I²Rt

= 100 x 100 x 0.5 x 3600

= 1.8 x 10⁷J

Previous Next

Go back to Phy classroom

Report an Error Ask A Question Download App

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

professor John is the leader of the ________ committee to review the new book? Answer this

1 Answers · English Language · 3 months ago
His contract was ---- because of irregularities in his contract You picked annulled over terminated and I want to know... Answer this

1 Answers · English Language · 2 months ago
whats is the difference between phrase and clause? Answer this

2 Answers · English Language · 3 days ago

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Electricity is supplied to a school along a cable of total resistance 0.5\(\Omega\) with the...

Correct Answer: Option D

Explanation

Contributions ({{ comment_count }})

Please wait...

Modal title

Report

Block User

{{ feedback_modal_data.title }}

Quick Questions

Post your Contribution

Sign In