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A rechargeable flashlight battery is capable of delivering 90mA for about 12h. How much charge can it release at that rate? If its terminal voltage is 1.5 V, how much energy can the battery deliver?
453KC
453KC
See lessA lightning bolt strikes an airplane with 40kA for 1.7ms. How many coulombs of charge are deposited on the plane?
q=i×t q=40×10^3×15×10^-3 q=600coloumbs
q=i×t
q=40×10^3×15×10^-3
q=600coloumbs
See lessA lightning bolt with 10kA strikes an object for 15microseconds. How much charge is deposited on the object?
I=q/t q=I×t q=10×10^3×15×10^-6 q=0.15coloumbs
I=q/t
q=I×t
q=10×10^3×15×10^-6
q=0.15coloumbs
See lessThe current through a branch in a linear network is 2A when the input source voltage is 10V. If the voltage is reduced to 1V and the polarity is reversed, the current through the branch is:
-0. 2amp
-0. 2amp
See lessA flashlight battery has a rating of 0.8ampere-hours (Ah) and a lifetime of 10 hours.
a. 8amp current it delivers b. 48watts
a. 8amp current it delivers
b. 48watts
See lessAn electric iron draws 2 Aat 120V. Find its resistance.
60
60
See lessFind the hot resistance of a light bulb rated 60W, 120V.
240
240
See less