General Physics Round 3

A 14-gauge copper wire has a diameter of 1.628 mm. What magnitude current flows when the drift velocity is 1.00 mm/s?

• a.-2.78 x 10¹ A

• b.-1.78 x 10¹ A

• c.-2.78 x 10⁹ A

• d.-2.50 x 10¹ A

A perfect conductor has____resistivity.

• a.large

• b.medium

• c.zero

• d.small

It is one of the factors wherein the electrical resistance between two points can depend on.

• a.Conductor's length

• b.Conductor's resistivity

• c.Conductor's current

• d.Conductor's area

What are the two major factors affecting the amount of charge a capacitor can store?

• a.Voltage applied & capacitor's physical characteristics

• b.Dielectric&voltage applied

• c.Capacitance&dielectric

• d.Charge and voltage applied

What is the current in milliamperes produced by the solar cells of a pocket calculator through which 4.00 C of charge passes in 4.00 h?

• a.0.278 mA

• b.0.479 ma

• c.0.176 mA

• d.0.200 mA

It behaves as if the positive charge carriers cause current flow.

• a.drift velocity

• b.conventional current

• c.electron flow

• d.proton flow

A__________in the direction ofFwill result from the charged particle moving in vacuum,in which after some time the charged particle would be moving in that direction at high speed.

• a.steady current

• b.steady speed

• c.steady acceleration

• d.steady flow

It is any motion of charge from one region to another.

• a.current

• b.drift velocity

• c.electric circuit

• d.drift circuit

Why is inserting dielectrics in a capacitor important?

• a.To impede or block the charges passing through the material.

• b.To keep the conducting plates from coming in contact

• c.To reduce the possibility of shorting out by sparking

• d.All of the above mentioned

It depends on the material of which the object is composed.

• a.conductors

• b.conductivity

• c.resistance

• d.resistivity