1.1. Complete the following sentences using one of the phrases from the box below. 

(i) Electrical power is generated at .............................................

[1]

(ii) Electricity is transmitted over long distances by transmission

lines that are part of.............................................................

[1]

(iii) Electricity is transmitted at high voltages so that......................

[1]

1.2. Which statement is true for transformers?

1.3. In a small transformer

• the primary voltage is 230 V

• the primary current is 0.020 A

• the secondary voltage is 5.0 V

Calculate the secondary current.

Use the equation

${I}_{s}=\frac{{V}_{p}\times{I}_{p}}{{V}_{s}}$