Question

My amplifier uses a filament that requires a maximum of 5 volts at a current of 15 amperes.
Calculate the resistance of the tube. (Round to two numbers to the right of the decimal)

YOUR ANSWER MUST INCLUDE A NUMBER, A SPACE, AND A UNIT (ohms, amps, or volts) EXAMPLES: 5 ohms, 5 amps, or 5 volts

Answer 1

I think that we can apply the Ohm's law:
\[R = \frac{{\Delta V}}{I} = \frac{5}{{15}} = ...ohms\]

Answer 2

okay

Answer 3

I agree. That tube will do a good job of keeping the top of your amplifier warm, too :-)