An underwater ocean research probe is powered by a small thermoelectric generator (TEG) that drives a sonar transmitter.

State the equation that links current ( $I$ ), potential difference ( $V$ ), and power ( $P$ ).

When the thermoelectric generator is active, a potential difference of $V8.0\text{ V}$ is maintained across its terminals, producing an electrical power output of $W5.6\text{ W}$ .

Calculate the current generated.

State the equation that links efficiency, total power input, and useful power output.

The electrical power from the generator is used to run the sonar transmitter. The transmitter has a total power input of $W2.5\text{ W}$ and operates at an efficiency of $0.72$ .

Calculate the useful acoustic power output of the transmitter.

An underwater ocean research probe is powered by a small thermoelectric generator (TEG) that drives a sonar transmitter.

State the equation that links current ( $I$ ), potential difference ( $V$ ), and power ( $P$ ).

When the thermoelectric generator is active, a potential difference of $V8.0\text{ V}$ is maintained across its terminals, producing an electrical power output of $W5.6\text{ W}$ .

Calculate the current generated.

State the equation that links efficiency, total power input, and useful power output.

The electrical power from the generator is used to run the sonar transmitter. The transmitter has a total power input of $W2.5\text{ W}$ and operates at an efficiency of $0.72$ .

Calculate the useful acoustic power output of the transmitter.

1.2 Conservation and dissipation of energy

Question 5

Markscheme

1.2 Conservation and dissipation of energy

Question 5

Markscheme

1.2 Conservation and dissipation of energy

Question 5

1.2 Conservation and dissipation of energy Questions

1.2 Conservation and dissipation of energy

Question 5

1.2 Conservation and dissipation of energy Questions