Resistance in a Circuit and Voltage Ammeter Quiz

What happens to the total resistance when resistors are connected in series?

• Becomes negative

• Increases

• Remains the same

• Decreases

How do you calculate the total resistance of resistors in series?

• Add up the individual resistances

• Divide the individual resistances

• Multiply the individual resistances

• Subtract the individual resistances

What happens to the total resistance when resistors are connected in parallel?

• Total resistance increases

• Total resistance decreases

• Total resistance becomes negative

• Total resistance remains the same

How do you calculate the total resistance of resistors in parallel?

• Rt = R1 - R2 - R3 - ... - Rn

• Rt = R1 + R2 + R3 + ... + Rn

• 1/Rt = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn

• Rt = R1 * R2 * R3 * ... * Rn

What instrument is used to measure voltage in a circuit?

• voltmeter

• ampmeter

• wattmeter

• ohmmeter

What is the unit of measurement for voltage?

• watts

• ohms

• volts

• meters

What instrument is used to measure current in a circuit?

• Thermometer

• Barometer

• Voltmeter

• Ammeter

How is an ammeter connected in a circuit to measure current?

• Connected to a resistor

• Not connected to the circuit

• In series

• In parallel

How do you calculate the resistance of a component in a circuit?

• R = V x I

• R = V/I

• R = I/V

• R = V + I

If a circuit has a voltage of 12V and a current of 3A, what is the resistance of the circuit?

• 6 ohms

• 4 ohms

• 2 ohms

• 10 ohms