NOCTI STEM Engineering Practice

what is this symbol for?

• light bulb
• switch
• battery
• resistor

As the resistance of a circuit increases, the current will

• increase
• decrease
• stay the same

The difference in electrical potential energy between two places is called

• resistance
• friction
• induction
• voltage

If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?

• 5 V
• 12 V
• 0.2 V
• 20 V

If both sides of a light bulb are at the same voltage, what happens to the light bulb?

• It glows very brightly
• There is no light
• The brightness of the light will vary over time
• The bulb will explode

this is the symbol for a _____?

• switch
• light 
• battery
• wires

The power formula is

• Power = Current - Voltage

• Power = Current + Voltage

• Power = Current x Voltage

• Power = Current x Resistance

Current is measured in

• Resistance

• Amps

• Voltage

• Watts

The voltage of a circuit that has a resistance of 10 ohms and a current of 1.5 A is

• 15 V

• 0.15 V

• 6.7 V

• None of these

Measuring instrument used to measure the electric current in a circuit.

• Ammeter
• Pyrometer
• Oscilloscope
• Multimeter