1.

Prakash bought an electric bulb which is rated as 70 W . He knows the fact that a 70 W bulb consumes70 joules of electrical energy per second . The energy consumed by it per second is "______"ergs.

Answer»

700
`70 xx 10^(7)`
`7 xx 10^(7)`
`70 xx 10^(5)`

ANSWER :B


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