A car fuse marked 3A operates optimally on a 12V battery, calculate the resistance of the fuse
Answer Details
The formula for calculating resistance is:
R = V/I
where R is resistance, V is voltage and I is current.
Given the fuse is marked 3A, it means it can carry a maximum current of 3A. Also, the voltage of the battery is given as 12V. Using Ohm's law, we can calculate the resistance of the fuse as follows:
R = V/I = 12V / 3A = 4.0Ω
Therefore, the resistance of the fuse is 4.0Ω.