Circuits Physics

A 12 V torch battery supplies a current of 0.50 A for 20 minutes. What is the quantity of charge delivered to the torch globe during that time?

• 6C

• 10C

• 60C

• 600C

A 240 V bed light is rated at 40 W. In kilojoules, how much energy does the light use in 40 minutes?

• 1.6kJ

• 160kJ

• 96kJ

• 960kJ

Tags

NGSS.HS-PS3-1

A 240 V electric oven is rated at 3600 W. It is used to cook a roast dinner, which takes 1.5 hours. How much energy is used (in kWh)?

• 5.4kWh

• 54kWh

• 540kWh

• 5400kWh

Tags

NGSS.HS-PS3-1

A 5.0 mA current flows through a 20 kΩ resistor, which is placed in series with a battery and a diode. The current in the diode and the potential difference across it is shown in the graph below. What is the EMF supplied by the battery to this circuit?

• 100V

• 150V

• 200V

• 250V

Tags

NGSS.HS-PS3-1

What is a benefit of using a parallel circuit?  

• It gets confusing.

• There are no problems.

• If one light goes out, it does not affect the others. 

• If one light goes out, they all go out. 

This is an example of a -------- circuit.

• Series

• Parallel

• Combination

This is an example of a -------- circuit.

• Series

• Parallel

• Combination

In this circuit, the bulb(s) that light up are:

• 1 only

• 2 only

• 1 and 2

• None of them

In this circuit, the bulb(s) that light up are:

• 1 only

• 2 only

• 1 and 2

• None of them

What does a voltmeter measure?

• Current

• Voltage

• Resistance