某导体电阻是2Ω,通过2A的电流时,1min内产生多少焦耳的热量?
问题描述:
某导体电阻是2Ω,通过2A的电流时,1min内产生多少焦耳的热量?
答
t=1min=60s,
Q=I2Rt
=(2A)2×2Ω×60s
=480J
答:1min产生的热量是480J.