Question

which device helps safely transmit electricity from the power plant to your home?
a. a motor
b. a generator
c. an electromagnet
d. a transformer

Explanation:

• A motor converts electrical energy into mechanical energy.
• A generator converts mechanical energy into electrical energy.
• An electromagnet is a magnet that runs on electricity.
• A transformer changes the voltage of electricity. It steps - up voltage at the power plant for efficient long - distance transmission (reducing energy loss due to resistance in the wires as \(P = I^{2}R\), and higher voltage means lower current for the same power \(P = VI\)) and steps - down voltage at the local level (near homes) for safe use (as household appliances and devices are designed to work at lower voltages).

Answer:

D. A transformer