How to Calculate the Resistance of a 5-Ampere Fuse Wire in a Circuit?
What is the resistance of a 5-ampere fuse wire that can withstand a maximum power of 1 watt in the circuit?
Choose one:
(a) 0.04 ohm
(b) 0.2 ohm
(c) 5 ohm
Answer:
The resistance of a 5-ampere fuse wire that can withstand a maximum power of 1 watt in the circuit is 0.04 ohm.
The resistance of a fuse wire in an electrical circuit plays a crucial role in determining the safety and proper functioning of the circuit. In this case, we are dealing with a 5-ampere fuse wire that can handle a maximum power of 1 watt.
To calculate the resistance of the fuse wire, we can use the formula R = P / I^2, where R is the resistance, P is the power, and I is the current. Given that the power is 1 watt and the current is 5 amperes, we can substitute these values into the formula:
R = 1 watt / (5 amperes)^2 = 1 watt / 25 amperes^2 = 0.04 ohm
Therefore, the resistance of the 5-ampere fuse wire in question is 0.04 ohm, which corresponds to option (a).