Electrical energy spent per minute in 4 ...

ICSE Class 10 Physics 2016 Paper

A battery of emf $12\ \mathrm{V}$ and internal resistance $2\ \Omega$ is connected with two resistors $A$ and $B$ of resistance $4\ \Omega$ and $6\ \Omega$ respectively joined in series.

Find:

Question : 64 of 73

Marks: +1, -0

Electrical energy spent per minute in

4 \Omega

Resistor.

Solution:

\text{Energy spent} = I^2 R t

= (1)^2 \times 4 \times 60

= 240 \,\text{J}

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