A car battery is charged by a `12V` supply,and energy stored in it is `7.20times10^(5)J`. The charge passed through the battery is -
(a) `6.0times10^(4)C,`
(b) `5.8times10^(3)C`
(c) `8.64times10^(6)C,`
(d) `1.6times10^(8)C`

The average thermal energy of oxygen at a temperature of 27C (А) 6.2times10^(-21) J (В) 4.5times10^(-21) J (C) 3.5times10^(-21) J (D) 1.2times10^(-21) J

A 15pF capacitor is connected to a 60V battery.How much electrostatic energy is stored? (A) 2.70times10^(-8)J (B) 1.77times10^(-8)J (C) 2.35times10^(-8)J (D) 1.35times10^(-8)J

[" 8.The dielectric strength of the air is about "-],[[" (A) "3times10^(6)v/m" (B) "3times10^(4)v/m],[" (C) "3times10^(2)v/m," (D) "3times10^(3)v/m]]

There are 10 turns in coil M and 15 turns in coil N .If a current of 2A is passed through coil M then the flux linked with coil N is 1.8times10^(-3)Wb .If a current of 3A is passed through coil N then flux linked with coil M is : (A) 1.2times10^(-3)Wb (B) 2.7times10^(-3)Wb (C) 1.8times10^(-3)Wb (D) 4.05times10^(-3)Wb

Which of the following cannot be the charge on a particle? [-3.2times10^(-19)C],[4.8times10^(-19)C],[1.2times10^(-19)C],[1.6times10^(-19)C]

Simplify: 10^(-1)times10^(2)times10^(-3)times10^(4)times10^(-5)times10^(6)

[" Calculate the wavelength in "],[" nanometers of a quantum of light "],[" with frequency of "8times10^(15)s^(-1)" .The "],[" given value of Planck's constant is "],[6.63times10^(-34)Js" .The velocity of light is "],[3.0times10^(8)ms^(-1)" ."],[[" (A) "3.2times10^(7)," (B) "2.5times10^(-25)],[" (C) "5times10^(-18)," 40"]]

The correct expanded form of "9.06" is (a) (9times10)+(6times(1)/(10)) , (b) (9times1)+(6times(1)/(10)) (c) (9times1)+(6times(1)/(100)) , (d) (9times10)+(6times(1)/(100))

Evaluate : ( a^4 times b^5 times c^7 )/ ( c^8 times a^4 times b^3 )