PH-1978

Electrical power and energy

Physics · Secondary 4 · Medium · Electrical power and energy

A 12 V battery has an electromotive force (e.m.f.) of 12 V and is connected to a lamp. The current in the lamp is 0.40 A.

What is the electrical power delivered to the lamp?

$4.8\,\text{W}$
$30\,\text{W}$
$0.033\,\text{W}$
$48\,\text{W}$

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