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A lightning bolt carrying 15,000 A lasts for 100 s. If the lightning strikes an airplane flying at 2 km, the charge deposited on the plane is
Answer : Option D
Explanation :
ΔQ = i * Δt = 15000 * 100 µ = 1.5C
Answer : Option A
Req ?
The energy required to charge a 10 F capacitor to 100 V is
Answer : Option B
E = ½Cv2
= 5 x 10-6x 1002 = 0.05J