A flash of lightning carries 10 C of charge which flows for 0.01s. If the voltage is 10MV, what is the energy?
Q = 10C
V = 10 MV = 10*106 V
Energy of the charge particle is given by
E = Q V
= 10*10*106
= 108 J
(a) Define electirc current. What is the SI unit of electric current. (b) One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor? (c) Which instrument is used to measure electric current ? How should it be connected in a circuit? (d) What is the conventional direction of the flow of electric current ? How does it differ from te direction of flow of electron? (e) A flash of lightning carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, What is the energy?
In a typical lightning flash, a charge of 30 C is transferred between two points having a potential difference of 109 volt. If all the energy released could be used to melt ice at 00C, the amount of ice melted (in grams) is :