Physics Review: Current Electricity

This is an example of a _______ circuit

• open
• series
• parallel
• square

If the voltage is increased and the resistance stays the same, current will ____.

• Increase
• Decrease
• Stay the same
• Not enough info

If the voltage stays the same and resistance is increased, current will ________. 

• Increase
• Decrease
• Stay the same
• Not enough info

Find total resistance
total current
and the voltage through resistor 3.

• 60 Ohms, 0.4 A,  8 V
• 60 Ohms, 2.5 A,  4 V
• 90 Ohms, 2.5 A, 24 V
• 60 Ohms, 0.4 A, 24 V

What is the power of a 3V light bulb with 20 A running through it?

• 0.15W
• 6W
• 60W
• 6.67W

If a battery produces 12.6 Volts, what would be the current for a 6 Ohm resistor?

• 2.1 Amps
• 75.6 Amps
• 0.5 Amps
• 15 Amps

A light circuit is operating at 75 Volts. What is the circuit's current if the resistance is 5 Ohms?

• 375 Amps
• 50 Amps
• 15 Amps
• 0.07 Amps

Two resistors are connected to a source of voltage as shown in the diagram below. At which position should an ammeter be placed to measure the current passing only through resistor R1?

• 1
• 2
• 3
• 4

A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is

• 1.0 A
• 2.0 A
• 3.0 A
• 4.0 A

Where should an ammeter be located to correctly measure the total current and where should a voltmeter be located to correctly measure the total voltage?

• ammeter at 3 and voltmeter at 4
• ammeter at 1 and voltmeter at 4 
• ammeter at 2 and voltmeter at 3 
• ammeter at 1 and voltmeter at 2