How many $M J$ of energy is spent when a current of $2 A$ passes for 10 minutes under a potential of $150 V$ ?

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Solution

$Δ G = - n F E = - Q E = - 2 \times 600 \times 150 \times 10^{- 3} k J$ $Δ G = 180000 J$
$Δ G = 0.18 M J$
The energy spent by the source = 0.18 MJ

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(a) Name a device which helps to maintain potential difference across a conductor (say, a bulb).
(b) If a potential difference of 10 V causes a current of 2 A to flow for 1 minute, how much energy is transferred?

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How many MJ of energy is spent when a current of 2 A passes for 10 minutes under a potential of 150 V?

ΔG=−nFE=−QE=−2×600×150×10−3 kJ ΔG=180000J ΔG=0.18MJ The energy spent by the source = 0.18 MJ

How many $M J$ of energy is spent when a current of $2 A$ passes for 10 minutes under a potential of $150 V$ ?

$Δ G = - n F E = - Q E = - 2 \times 600 \times 150 \times 10^{- 3} k J$ $Δ G = 180000 J$
$Δ G = 0.18 M J$
The energy spent by the source = 0.18 MJ