PH-2042

Electrical power and energy

Physics · Secondary 4 · Hard · Electrical power and energy

A restaurant uses 20 identical lamps, each rated at 40 W, connected in parallel to a 200 V mains supply. What is the total current drawn by all the lamps when they are switched on?

$4.0\,\text{A}$
$0.20\,\text{A}$
$2.0\,\text{A}$
$8.0\,\text{A}$

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