Charge, Current & Time

Current is measured in....

• Amps 
• Volts
• Ohms
• Coulombs

What 'flows' in a wire?

• Protons
• Neutrons
• Atoms
• Electrons

The flow/movement of electric charges 

• Voltage
• Resistance 
• Current 
• Circuit 

There is a current of 3.0A in a resistor for time t.

During time t, a charge of 120C flows through the resistor.

What is time t ?

• 0.025 minutes

• 0.025 s

• 40 minutes

• 40 s

How much charge must pass by a point in 10 s for the current to be  0.50 A? 

• 0.05 C

• 5.0 C

• 20 C

• 2.0 C

A charge of 48 C flows for 6s. What is the current?

• 8 A

• 288 A

• 8 V

• 288 V

Quantity of charge can be measured in

• time (s)

• Ampere (A)

• coulombs (C)

• Joule (J)

An example of a conductor is :

• a glass paperweight
• a plastic cap
• a metal screw
• a wooden handle

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

The device used for measuring electric current is known as

• Ammeter

• Galvanometer

• Voltmeter

• Potentiometer