A household simultaneously uses ten 40 W lamps and one 2 kW water heater for 2 hours

PHYSICS · Single correct · GCSE · Physics · Electricity · Electricity

Problem

A household simultaneously uses ten 40 W lamps and one 2 kW water heater for 2 hours. How many units (kWh) of electrical energy are consumed? (a)

4.4\ \text{kWh}

(b)

4.8\ \text{kWh}

(c)

2.4\ \text{kWh}

(d)

4.0\ \text{kWh}