Electrical Circuits

Which of the following devices measures current in an electric circuit?

• an ammeter

• an ohmmeter

• a voltage meter

• a resistor

The illustration depicts a short circuit.

• True

• False

Tags

NGSS.HS-PS2-5

In a closed circuit, how does battery voltage affect current?

• As voltage increases, current increases.

• As voltage increases, current decreases.

• Voltage has no affect on current.

• If voltage exceeds current, a short circuit circuit will develop.

In a standard series circuit, the voltage is the same everywhere in the circuit.

• True

• False

Which of the following correctly states relationship between voltage, resistance, and current in a circuit?

• Current is directly related to voltage but inversely related to resistance.

• Current is directly related to both voltage and resistance.

• Current is inversely related to both voltage and resistance.

• Current is directly related to voltage but is not affected by resistance.

Which of the symbols represents current in an electrical circuit?

• i

• c

• e

• r

An electrical circuit is powered by a 1.5-volt battery and contains a light bulb producing 5 Ohms of resistance. There is also another 5 Ohm resistor in the circuit. How many amps of current are in this circuit? HINT: V = IR

• 0.15 amps

• 15.0 amps

• 6.67 amps

• 1.50 amps

An electrical circuit is powered by a 12-volt battery and contains a light bulb. The current flowing in the circuit is 20 amps. What is the resistance of the light bulb? HINT: V = IR

• 0.6 Ohms

• 240 Ohms

• 1.67 Ohms

• 12 Ohms

An electrical circuit is powered by a battery and contains a light bulb producing 1.5 Ohms of resistance. The circuit is flowing at 4 amps of current. What is the voltage of the battery?

HINT: V = IR

• 6.0 volts

• 1.5 volts

• 9.0 volts

• 12.0 volts

Electric field is a __________ quantity whose direction is defined as the direction that a ____________ test charge would be pushed when placed in the field.

• vector, positive

• vector, negative

• scalar, positive

• scalar, negative

Tags

NGSS.HS-PS3-5