Current Electricity and Electrical InstrumentHard
Question
The voltage of clouds is 4 × 106 volt with respect to round. In a lighting strike lasting 100msec, a charge of 4 coulombs is delivered to the ground. The power of lightening strike is :
Options
A.160 MW
B.80 MW
C.20 MW
D.500 MW
Solution
Energy delivered to the ground
= 4 × 106 × 4 = 16 × 106 joule
Power =
= 16 × 107
= 160 MW
= 4 × 106 × 4 = 16 × 106 joule
Power =
= 16 × 107= 160 MW
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A micro-ammeter has a resistance of 100 Ω and full scale range of 50 mA. It can be used as a voltmeter and an ammet...The variation of current (I) and voltage (V) is as shown in figure. The variation of power P with current I is best show...The specific resistance of a metal wire is 64 × 10−6 Ω × cm., the length is 198 cm and the resistan...In a potentiometer wire experiment the emf of a battery in the primary circuit is 20volt and its internal resistance is ...The resistance of a coil in a platinum resistance thermometer at 0oC is 5 ohm and at 100oC it is 5.75 ohm. Its resistanc...