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प्रश्न
The heat produced in a wire of resistance 'x' when a current 'y' flows through it in time 'z' is given by:
(a) x2 × y × z
(b) x × z × y2
(c) y × z2 × x
(d) y × z × x
उत्तर
`x xx zxx y^2`
This is so because heat, H = I2Rt
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