Answer:
I= 3.5 amps
Explanation:
Step one:
given data
rating of resistor R= 8 ohms
power P= 100W
Required
The current I
Step two
Yet this power is also given by
[tex]P = I^2R[/tex]
make I subject of the formula we have
[tex]I= \sqrt{\frac{P}{R} }[/tex]
substitute
[tex]I= \sqrt{\frac{100}{8} }\\\\I=\sqrt{12.5}\\\\I= 3.5 amps[/tex]
