Apair of alkaline d batteries can provide about 98000 j of electric energy at 3.0 v. if a current of 2 a flows through two d batteries while they’re in the circuit of a flashlight, how long will the batteries be able to provide power to the flashlight?

4.53 hours

Explanation:

Energy, E = 98000 J

Voltage, V = 3 V

Current, i = 2 A

Let t be the time for which the batteries give the power.

Energy = V x i x t

98000 = 3 x 2 x t

t = 16333.33 seconds

t = 4.53 hours

their crystal patterns have been disrupted by stress

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27