T5D

Question 1

T5D01 (B)
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)

Answer 1

2 Current (I) equals voltage (E) divided by resistance (R)

Question 2

T5D02 (A)
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)

Answer 2

1 Voltage (E) equals current (I) multiplied by resistance (R)

Question 3

T5D03 (B)
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)

Answer 3

2 Resistance (R) equals voltage (E) divided by current (I)

Question 4

T5D04 (B)
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

Answer 4

2 30 ohms

Question 5

T5D05 (C)
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

Answer 5

3 8 ohms

Question 6

T5D06 (A)
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

Answer 6

1 3 ohms

Question 7

T5D07 (D)
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

Answer 7

4 1.5 amperes

Question 8

T5D08 (C)
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

Answer 8

3 2 amperes

Question 9

T5D09 (C)
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

Answer 9

3 10 amperes

Question 10

T5D10 (A)
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

Answer 10

1 1 volt

Question 11

T5D11 (B)
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

Answer 11

2 10 volts

Question 12

T5D12 (D)
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

Answer 12

4 20 volts

Question 13

T5D13 (B)
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

Answer 13

2 It is unchanged

Question 14

T5D14 (A)
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

Answer 14

1 It divides between them dependent on the value of the

components

Question 15

T5D15 (C)
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

Answer 15

3 It is determined by the type and value of the

components

Question 16

T5D16 (D)
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

Answer 16

4 The same voltage as the source