In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time.
Question:
In an electrical circuit, a battery is connected to pass $20 \mathrm{C}$ of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at $15 \mathrm{~V}$. The work done by the battery is______$\mathrm{J} .$
Solution:
$(300)$
Charge flown $(Q)=20 c$ Potential difference $(\mathrm{V})=15 \mathrm{~V}$
Work done $(w)=Q . V$
$=20 \times 15=300 \mathrm{~J}$
$w=300 \mathrm{~J}$
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