A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A is passed through it. If the current is increased from 1.5 A to 3A, what will be the energy developed in 20 s.
Select the correct option:
A
1500 J
B
1000 J
C
500 J
D
2000 J
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\begin{aligned} & 500=(1.5)^2 \times R \times 20 \\ & E=(3)^2 \times R \times 20 \\ & E=2000 \mathrm{~J}\end{aligned}$
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