Question 1

A complete circuit that is continuous from source through loads and back to ground has ________.

Accepted Answer

A) Congruency 
B) Continuity 
C) Both A and B 
D) Neither A nor B 
A) Congruency 
B) Continuity 
C) Both A and B 
D) Neither A nor B B

Question 2

In an open circuit ________.

Accepted Answer

A) No voltage is present 
B) No current will flow 
C) Both A and B 
D) Neither A nor B 
A) No voltage is present 
B) No current will flow 
C) Both A and B 
D) Neither A nor B B

Question 3

High resistance in a circuit ________.

Accepted Answer

A) Reduces current flow through the circuit 
B) May cause a fuse to blow 
C) Both A and B 
D) Neither A nor B 
A) Reduces current flow through the circuit 
B) May cause a fuse to blow 
C) Both A and B 
D) Neither A nor B A

Question 4

An electrical circuit uses 12 volts and has a current flow of 2 amps. What is the wattage?

Accepted Answer

A) 6 watts 
B) 12 watts 
C) 24 watts 
D) None of these 
A) 6 watts 
B) 12 watts 
C) 24 watts 
D) None of these

Question 5

High resistance in a circuit can cause ________.

Accepted Answer

A) Clicking of relays or solenoids 
B) Dim lights 
C) Slow motor operation 
D) Any of the above 
A) Clicking of relays or solenoids 
B) Dim lights 
C) Slow motor operation 
D) Any of the above

Question 6

A loose ground connection ________.

Accepted Answer

A) Causes reduced current flow 
B) Causes less power to be available to the electrical components 
C) Both A and B 
D) Neither A nor B 
A) Causes reduced current flow 
B) Causes less power to be available to the electrical components 
C) Both A and B 
D) Neither A nor B

Question 7

In a circuit with a short to ground ________.

Accepted Answer

A) No current flows past the point of the short 
B) Some or all of the electrical loads may no longer work 
C) Both A and B 
D) Neither A nor B 
A) No current flows past the point of the short 
B) Some or all of the electrical loads may no longer work 
C) Both A and B 
D) Neither A nor B

Question 8

It requires ________ volt(s) to push 1 ampere through 1 ohm of resistance.

Accepted Answer

A) 12 
B) 2 
C) 1 
D) None of these 
A) 12 
B) 2 
C) 1 
D) None of these

Question 9

In a circuit with high resistance ________.

Accepted Answer

A) No electrical device will function 
B) Electrical loads may still operate but less efficiently 
C) Both A and B 
D) Neither A nor B 
A) No electrical device will function 
B) Electrical loads may still operate but less efficiently 
C) Both A and B 
D) Neither A nor B

Question 10

An open electrical circuit has zero ohms resistance.

Accepted Answer

A) True 
 B)False

Question 11

Which component in this electrical circuit is considered the "load"?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 12

A sheet metal screw holding a metal body panel has pierced the insulation of a wire and is touching the copper wire. This would cause a ________.

Accepted Answer

A) Short to power 
B) Short to ground 
C) High resistance 
D) None of these 
A) Short to power 
B) Short to ground 
C) High resistance 
D) None of these

Question 13

Corrosion on electrical terminals may cause ________.

Accepted Answer

A) Increased current flow in the circuit 
B) Lights to be dimmer than normal 
C) Both A and B 
D) Neither A nor B 
A) Increased current flow in the circuit 
B) Lights to be dimmer than normal 
C) Both A and B 
D) Neither A nor B

Question 14

A shorted circuit ________.

Accepted Answer

A) Always causes the fuse to blow 
B) Could include an open circuit 
C) Both A and B 
D) Neither A nor B 
A) Always causes the fuse to blow 
B) Could include an open circuit 
C) Both A and B 
D) Neither A nor B

Question 15

A circuit with a short to voltage may cause ________.

Accepted Answer

A) Improper operation of loads in the circuit 
B) Other circuits to malfunction 
C) Both A and B 
D) Neither A nor B 
A) Improper operation of loads in the circuit 
B) Other circuits to malfunction 
C) Both A and B 
D) Neither A nor B

Question 16

Electrical controls such as switches ________.

Accepted Answer

A) May be on either the source or ground side of the circuit 
B) Control electrical flow in the circuit 
C) Both A and B 
D) Neither A nor B 
A) May be on either the source or ground side of the circuit 
B) Control electrical flow in the circuit 
C) Both A and B 
D) Neither A nor B

Question 17

Excessive corrosion on an electrical connector ________.

Accepted Answer

A) Can cause a fuse to blow 
B) Can cause lights to be dim 
C) Both A and B 
D) Neither A nor B 
A) Can cause a fuse to blow 
B) Can cause lights to be dim 
C) Both A and B 
D) Neither A nor B

Question 18

An open circuit ________.

Accepted Answer

A) May be caused by high resistance 
B) May be caused by a blown fuse 
C) Both A and B 
D) Neither A nor B 
A) May be caused by high resistance 
B) May be caused by a blown fuse 
C) Both A and B 
D) Neither A nor B

Question 19

A circuit with excessive current flow ________.

Accepted Answer

A) May cause a fuse to blow 
B) May create excess heat in conductors 
C) Both A and B 
D) Neither A nor B 
A) May cause a fuse to blow 
B) May create excess heat in conductors 
C) Both A and B 
D) Neither A nor B

Question 20

The electrical path to ground may be completed by ________.

Accepted Answer

A) The vehicle frame 
B) The metal body of the vehicle 
C) Both A and B 
D) Neither A nor B 
A) The vehicle frame 
B) The metal body of the vehicle 
C) Both A and B 
D) Neither A nor B

Exam 40: Electrical Circuits and Ohms Law

A complete circuit that is continuous from source through loads and back to ground has ________.

In an open circuit ________.

High resistance in a circuit ________.

An electrical circuit uses 12 volts and has a current flow of 2 amps. What is the wattage?

High resistance in a circuit can cause ________.

A loose ground connection ________.

In a circuit with a short to ground ________.

It requires ________ volt(s) to push 1 ampere through 1 ohm of resistance.

In a circuit with high resistance ________.

An open electrical circuit has zero ohms resistance.

Which component in this electrical circuit is considered the "load"?

A sheet metal screw holding a metal body panel has pierced the insulation of a wire and is touching the copper wire. This would cause a ________.

Corrosion on electrical terminals may cause ________.

A shorted circuit ________.

A circuit with a short to voltage may cause ________.

Electrical controls such as switches ________.

Excessive corrosion on an electrical connector ________.

An open circuit ________.

A circuit with excessive current flow ________.

The electrical path to ground may be completed by ________.

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