Topic T5D Quick Review Audio

T5D01:

What formula is used to calculate current in a circuit?

  1. Current (I) equals voltage (E) multiplied by resistance (R)
  2. Current (I) equals voltage (E) divided by resistance (R)
  3. Current (I) equals voltage (E) added to resistance (R)
  4. Current (I) equals voltage (E) minus resistance (R)

T5D02:

What formula is used to calculate voltage in a circuit?

  1. Voltage (E) equals current (I) multiplied by resistance (R)
  2. Voltage (E) equals current (I) divided by resistance (R)
  3. Voltage (E) equals current (I) added to resistance (R)
  4. Voltage (E) equals current (I) minus resistance (R)

T5D03:

What formula is used to calculate resistance in a circuit?

  1. Resistance (R) equals voltage (E) multiplied by current (I)
  2. Resistance (R) equals voltage (E) divided by current (I)
  3. Resistance (R) equals voltage (E) added to current (I)
  4. Resistance (R) equals voltage (E) minus current (I)

T5D04:

What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?

  1. 3 ohms
  2. 30 ohms
  3. 93 ohms
  4. 270 ohms

T5D05:

What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

  1. 18 ohms
  2. 0.125 ohms
  3. 8 ohms
  4. 13.5 ohms

T5D06:

What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

  1. 3 ohms
  2. 16 ohms
  3. 48 ohms
  4. 8 ohms

T5D07:

What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

  1. 9600 amperes
  2. 200 amperes
  3. 0.667 amperes
  4. 1.5 amperes

T5D08:

What is the current through a 100-ohm resistor connected across 200 volts?

  1. 20,000 amperes
  2. 0.5 amperes
  3. 2 amperes
  4. 100 amperes

T5D09:

What is the current through a 24-ohm resistor connected across 240 volts?

  1. 24,000 amperes
  2. 0.1 amperes
  3. 10 amperes
  4. 216 amperes

T5D10:

What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

  1. 1 volt
  2. 0.25 volts
  3. 2.5 volts
  4. 1.5 volts

T5D11:

What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

  1. 1 volt
  2. 10 volts
  3. 11 volts
  4. 9 volts

T5D12:

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

  1. 8 volts
  2. 0.2 volts
  3. 12 volts
  4. 20 volts

T5D13:

What happens to current at the junction of two components in series?

  1. It divides equally between them
  2. It is unchanged
  3. It divides based on the on the value of the components
  4. The current in the second component is zero

T5D14:

What happens to current at the junction of two components in parallel?

  1. It divides between them dependent on the value of the components
  2. It is the same in both components
  3. Its value doubles
  4. Its value is halved

T5D15:

What is the voltage across each of two components in series with a voltage source?

  1. The same voltage as the source
  2. Half the source voltage
  3. It is determined by the type and value of the components
  4. Twice the source voltage

T5D16:

What is the voltage across each of two components in parallel with a voltage source?

  1. It is determined by the type and value of the components
  2. Half the source voltage
  3. Twice the source voltage
  4. The same voltage as the source