Question

  giúp e câu c

Answer 1

a) \(R_1-nt-R_2\Rightarrow R_{tđ}=R_1+R_2=16+32=48\left(\Omega\right)\)

\(I=\dfrac{U}{R_{tđ}}=\dfrac{48}{48}=1\left(A\right)\)

b) \(P=U.I=48.1=48\left(W\right)\)

c) \(20\left(phút\right)=1200\left(s\right)\)

\(A=P.t=48.1200=57600\left(J\right)=57,6\left(kJ\right)\)