Daily review: Temperature Sensor | Ultrasonic…

Q: Which of the following is NOT a common type of temperature sensor?

Ultrasonic Sensor — Ultrasonic sensors measure distance, not temperature.

Q: Ohm's Law is mathematically expressed as:

V = I * R — Voltage (V) equals Current (I) multiplied by Resistance (R).

Q: What physical quantity does an ultrasonic sensor typically measure?

Distance — Ultrasonic sensors use sound waves to measure the distance to an object.

Q: A thermistor's resistance typically:

Increases with increasing temperature (for PTC thermistors) & decreases with temp (for NTC). — NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) thermistors behave differently. Both are common.

Q: If a circuit has a voltage of 12V and a resistance of 4 Ohms, what is the current flowing through it?

3 Amps — Using Ohm's Law (I = V/R), I = 12V / 4 Ohms = 3 Amps.

Q: Which type of temperature sensor uses the Seebeck effect?

Thermocouple — Thermocouples generate a voltage proportional to temperature difference based on the Seebeck effect.

Q: What unit is used to measure electrical resistance?

Ohm (?) — Resistance is measured in Ohms (?).

Q: What is a major advantage of ultrasonic sensors over some other distance sensing technologies?

They are unaffected by the color of the object. — Ultrasonic sensors are generally less affected by target color.

Q: An RTD (Resistance Temperature Detector) changes resistance based on:

Temperature variations — RTDs change resistance based on temperature.

Q: In a series circuit, if the voltage across a resistor is 6V and the current flowing through it is 2A, what is the resistor's value?

3 Ohms — Using Ohm's Law (R = V/I), R = 6V / 2A = 3 Ohms.

Question 1 of 10

Which of the following is NOT a common type of temperature sensor?

Ultrasonic sensors measure distance, not temperature.

Question 2 of 10

Ohm's Law is mathematically expressed as:

Voltage (V) equals Current (I) multiplied by Resistance (R).

Question 3 of 10

What physical quantity does an ultrasonic sensor typically measure?

Ultrasonic sensors use sound waves to measure the distance to an object.

Question 4 of 10

A thermistor's resistance typically:

NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) thermistors behave differently. Both are common.

Question 5 of 10

If a circuit has a voltage of 12V and a resistance of 4 Ohms, what is the current flowing through it?

Using Ohm's Law (I = V/R), I = 12V / 4 Ohms = 3 Amps.

Question 6 of 10

Which type of temperature sensor uses the Seebeck effect?

Thermocouples generate a voltage proportional to temperature difference based on the Seebeck effect.

Question 7 of 10

What unit is used to measure electrical resistance?

Resistance is measured in Ohms (?).

Question 8 of 10

What is a major advantage of ultrasonic sensors over some other distance sensing technologies?

Ultrasonic sensors are generally less affected by target color.

Question 9 of 10

An RTD (Resistance Temperature Detector) changes resistance based on:

RTDs change resistance based on temperature.

Question 10 of 10

In a series circuit, if the voltage across a resistor is 6V and the current flowing through it is 2A, what is the resistor's value?

Using Ohm's Law (R = V/I), R = 6V / 2A = 3 Ohms.

Daily review: Temperature Sensor | Ultrasonic Sensors | Ohm’s Law Quiz