Answer to Question #182318 in Electricity and Magnetism for Ikraa

Question

1. A resistor is connected in series with a capacitor, a switch that is in the open position and a battery.

Sketch a graph to show what would happen to the current in the circuit when the switch is closed and state the mathematical equation that describes the change in current in the circuit.

(5 marks)

2. (a) Sketch a waveform diagram showing the output of a piezoelectric ultrasonic transducer when it receives a reflection of ultrasound from an acoustic interface.

(2 marks)

(b) Assuming the transducer is made from “pzt”, how does the wavelength of the received wave relate to the transducer dimensions? 

Answer 1

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