The current through a certain heater wire is found to be fairly independent of its temperature. If the current through the heater wire is doubled, the amount of energy delivered by the heater in a given time interval will (a) increase by a factor of two. (b) decrease by a factor of two. (c) increase by a factor of four. (d) decrease by a factor of four. (e) increase by a factor of eight.

Question

14 December, 07:57

+5

Answers (1)

Know the Answer?

Cujo · Answer 1

(c) increase by a factor of four

Explanation:

energy = power x time, and power = resistance x current ^2. 2^2 = 4.