Electrical Energy II

Basic science JSS3 Second term

Sub-theme: learning about our environment

WEEK 10

Electrical Energy II

Performance Objectives

The student should be able to:

1. State the function of fuse and circuit breaker in a house circuit
2. Read the electric meter for billing.

Content

House circuit

Houses are wired in parallel because of some advantages of a parallel circuit. An example is that if one bulb in a house burns out, others will stay on. However, in a series circuit, if one bulb burns out, the other entire bulbs will go off as well.

The following are elements in a house circuit: control switch, meter box, fuse box, switches, sockets, lamps, and circuit breakers. The functions are as follows:

Control switch

This…