If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
айдем сопротивление нитей ламп, зная мощность и напряжение принимаем 220 вольт, P=U*I если I=U/R то подставив получим P=U* U/R=U²/R отсюда R1=U²/P=220²/40=48400/40=1210 Ом -сопротивление 1 лампы
R2=U²/P=220²/60=48400/60=807 Ом - сопротивление 2 лампы
лампы будут включены последовательно, значит общее сопротивление цепи равно R=R1+R2=1210+807= 2017 Ом сопротивление всей цепи, в последовательной цепи ток одинаковый значит I=U/R=220/2017=0.11 А, зная ток и сопротивление находим мощность каждой лампы P=I*U если I=U/R то U=I*R подставим в выражение P=I*I*R1=I²*R1= 0.0121*1210 =14.64 Вт - первая лампа
P=I*I*R2=I²*R2= 0.0121*807=9.76 вторая лампа
проверяем
U1=I*R1= 0.11*1210=133.1 Вольт - напряжение на первой лампе U2=I*R2=0.11*807=88.7 - напряжение на второй лампе ( в последовательной цепи общее напряжение равно сумме напряжений на каждом сопротивлении ) P1=I*U1=0.11*133.1=14.64 Вт - 1 лампа, P2=I*U2=0.11*88.7=9.76 Вт -2 лампа
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
If this was you
Just to be safe, to log in to this account you’ll need to verify this is really you by answering some security questions.
If this wasn’t you
Complete these steps now to protect your account.
Change your password. You'll be logged out of all your active Twitter sessions except the one you're using at this time.
Review the apps that have access to your account and revoke access to any unfamiliar
R2=U²/P=220²/60=48400/60=807 Ом - сопротивление 2 лампы
лампы будут включены последовательно, значит общее сопротивление цепи равно R=R1+R2=1210+807= 2017 Ом сопротивление всей цепи, в последовательной цепи ток одинаковый значит I=U/R=220/2017=0.11 А, зная ток и сопротивление находим мощность каждой лампы P=I*U если I=U/R то U=I*R подставим в выражение P=I*I*R1=I²*R1= 0.0121*1210 =14.64 Вт - первая лампа
P=I*I*R2=I²*R2= 0.0121*807=9.76 вторая лампа
проверяем
U1=I*R1= 0.11*1210=133.1 Вольт - напряжение на первой лампе U2=I*R2=0.11*807=88.7 - напряжение на второй лампе ( в последовательной цепи общее напряжение равно сумме напряжений на каждом сопротивлении ) P1=I*U1=0.11*133.1=14.64 Вт - 1 лампа, P2=I*U2=0.11*88.7=9.76 Вт -2 лампа