8 Energy – forces doing work

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Question 43

A technician compares two soldering irons.

Soldering iron	Energy transferred in $J\text{J}$	Time switched on in $s\text{s}$
X	3600	60
Y	5400	90

Soldering iron Y transfers more energy during the test than soldering iron X, but the technician concludes that the two soldering irons have equal powers.

Explain how the measurements support the technician's conclusion.

[2]

8 Energy – forces doing work

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Question 43

A technician compares two soldering irons.

Soldering iron	Energy transferred in $J\text{J}$	Time switched on in $s\text{s}$
X	3600	60
Y	5400	90

Soldering iron Y transfers more energy during the test than soldering iron X, but the technician concludes that the two soldering irons have equal powers.

Explain how the measurements support the technician's conclusion.

[2]

8 Energy – forces doing work

Question 43

Markscheme

8 Energy – forces doing work

Question 43

Markscheme

8 Energy – forces doing work

Question 43

8 Energy – forces doing work Questions

8 Energy – forces doing work

Question 43

8 Energy – forces doing work Questions