2022 Work, Energy and PowerPower Easy Question 2 of 11 in Power

The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is :

A $1\times10^5\ J$
B $36\times10^7\ J$
C $36\times10^4\ J$
D $36\times10^5\ J$

The answer is B.

Solution

$E = P \times t = 100 \times 10^3 \times 3600$ $= 36 \times 10^7$ J

Concept energy = power × time

Power in past papers

11 questions from this chapter have appeared across 9 exam years.