Question set 14

When a 20.0 V battery is connected to a resistor, the current through the resistor is 2.0 A. What is the resistor's value?

10 ohms

The current through a 10.0 ohm resistor connected to a 120.0 V power supply is

12 A

A 40.0 ohm resistor has a 4.0 A current in it. What is the voltage across the resistor?

160 V

A 10.0 ohm resistor has a 2.0 A current in it. What is the voltage across the resistor?

20 V

When a 40.0 V battery is connected to a resistor, the current through the resistor is 2.0 A. What is the resistor's value?

20 ohms

When a 20.0 V battery is connected to a resistor, the current through the resistor is 4.0 A. What is the resistor's value?

5 ohms

A 10.0 ohm resistor has a 5.0 A current in it. What is the voltage across the resistor?

50V

The current through a 10.0 ohm resistor connected to an 60.0 V power supply is

6 A.

the current through a 10.0 ohm resistor connected to an 60.0 V power supply is

6 A.

Three resistors, 1-ohm, 2-ohm, and 3-ohm are connected in series. Their equivalent resistance is

6 ohms.

A 20.0 ohm resistor has a 4.0 A current in it. What is the voltage across the resistor?

80 V

Three 300-ohm resistors in series give an equivalent resistance of

900 ohms

A circuit is made containing a battery and a single resistor. Decreasing the battery's electric potential difference will cause the total current in the circuit to

decrease.

As the number of resistors in a parallel circuit increases, the overall resistance __________ and the current in the circuit __________.

decreases, increases

If 5 identical bulbs are connected in series and one bulb goes out, the other bulbs

go out completely.

As more and more cells are added in series to a circuit containing a single light bulbs, the brightness of the bulb

increase

Compared to the resistance of two resistors connected in series, the same two resistors connected in parallel have

less resistance.

When two lamps are connected in parallel to a battery, the total electrical resistance that the battery senses is

less than the resistance of either lamp.

When two resistors are connected in parallel to a battery, the electrical resistance that the battery senses is

less than the resistance of either resistor.

The same circuit relationships that are true for resistors are true for light bulbs. (true/false)

true