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roshko2002
@roshko2002
August 2022
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Решите задачи 301 и 303
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nikolaygr
Verified answer
301.
R1=2 Ом ???(Не видно на рисунке)
U=4В
U1=1В
U2=U1-U
R=R1+R2
I=U1/R1=1/2=0,5А
U2=4-1=3В
R2=U2/I=3/0,5=6 Ом
303
I1=U/R1=20/1000=0,02A
I2=0,04-0,02=0,02A
R(вольтметра)= U/I2=20/0,02=1000 Ом
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Answers & Comments
Verified answer
301.R1=2 Ом ???(Не видно на рисунке)
U=4В
U1=1В
U2=U1-U
R=R1+R2
I=U1/R1=1/2=0,5А
U2=4-1=3В
R2=U2/I=3/0,5=6 Ом
303
I1=U/R1=20/1000=0,02A
I2=0,04-0,02=0,02A
R(вольтметра)= U/I2=20/0,02=1000 Ом