Stage 1 of 6
LEARN
A radio supply pushes current through a load and back. Change the supply and the load before learning the formula.
Labs · 05
Electricity Without the Textbook
Voltage, current, resistance, power, and an interactive introduction to Ohm's law.
NOT STARTED
Lab workspace
Work through the six stages. Try the controls. Nothing here receives or transmits a real radio signal.
Stage 2 of 6
SEE IT
Voltage, current, and resistance describe what you just changed. Watts here are electrical power from the supply, not the radio's RF output.
Stage 3 of 6
DO IT
Use the bench for each step. The readings are the calculation. Keep the units on the meter.
Stage 4 of 6
EXPLAIN IT
If resistance stays the same, why does increasing voltage cause more current to flow?
Stage 5 of 6
EXAM CONNECTION
RADIO LAB PRACTICE. These questions are about the bench you just used. They are not official exam questions.
Stage 6 of 6
FIELD TASK
You are planning a portable radio day. The supply is 13.8 V. While receiving, the radio draws 0.5 A. While transmitting, it draws 5 A. Compare the electrical power each condition asks of the supply.