Multiple Choice
When a camera flash goes off, the batteries immediately begin to recharge the flash's capacitor, which stores electric charge given by
(The maximum charge capacity
is and t is measured in seconds.) How long does it take to recharge the capacitor to 90% of capacity if
?
A)
seconds
B)
seconds
C)
seconds
D)
seconds
E)
seconds
Correct Answer:
Verified
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