ICE ELECS 1 (Electrical Engineering)_ SEERS April 2023 F2F Canva

A thermistor is a type of

• power supply

• battery

• switch

• resistor

A circuit breaker is a

• resettable protective device

• fuse

• switch

• resistor

A wiper is the sliding contact in a

• thermistor

• photoconductive cell

• potentiometer

• switch

Which of the following is not an electrical quantity?

• distance

• voltage

• current

• power

The colored bands for a 4,700 ohm resistor with a ten percent tolerance are

• yellow, violet, red, silver

• orange, violet, red, silver

• yellow, violet, red, gold

• yellow, violet, orange, gold

A two-terminal variable resistor is known as a

• rheostat

• potentiometer

• thermistor

• wiper

The minimum resistance value for a blue, gray, red, silver resistor is

• 612Ω

• 6,120Ω

• 6,800Ω

• 6,460Ω

The number of megaohms in 0.03 kilohms is

• either 0.00002 MΩ or 0.0002 MΩ

• 0.0002 MΩ

• 3 × 10–5 MΩ

• 0.00002 MΩ

You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

• 0 V

• 9 V

• 18 V

• 900 mV

A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is

• 6 V

• 0.6 V

• 0 V

• 1.2 V