Circuits

A series circuit has a 12 V battery and an equivalent resistance of 3 Ω. What is the circuit's current?

• 3

• 4

• 36

• 9

The symbol for a light bulb or lamp is:

• A

• B

• C

• D

The symbol for battery is:

• A

• B

• C

• D

The symbol for a resistor is:

• A

• B

• C

• D

The symbol for a switch is:

• A

• B

• C

• D

If you increase the number of resistors in a parallel circuit, the current will

• increase

• decrease

• stay the same

• not enough info

If you add more resistors to a series circuit, what happens to the equivalent resistance of the circuit? What happens if you add more to a parallel circuit?

• Both increase resistance

• Both decrease resistance

• Series decreases, parallel increases

• Series increases, parallel decreases

If the electric force between two charges is negative, the charges are being

• attracted

• repelled

A circuit has a total resistance of 9 Ω, a current of 1 A, and a voltage of 30 V. There are 3 resistors in the circuit, all with equal resistance. What is the voltage drop across each resistor?

• 3 V

• 9 V

• 10 V

• 30 V

A circuit has a 5 V battery and a resistance of 10 Ω. What is the current?

• 0.5

• 50

• 10

• 1