Sign up for FREE

Electric circuits revision

Last updated about 1 year ago

22 questions

1

1

1

1

1

1

2

2

1

1

1

1

1

1

2

2

2

2

1

2

2

1

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

In the following circuit, the reading on the voltmeter is 24 V.
The current in the circuit is ______ amperes and the emf of the battery is _______ volts.

Other Answer Choices:

2

0,5

24

Question 19

19.

Question 20

20.

Question 21

21.

Question 22

22.

What is the unit of electric current?

Watt

Ohm

Ampere

Volt

What is the property of a material that opposes the flow of electric current called?

Resistance

Voltage

Power

Current

The diagrams show four circuits. 

Which circuit contains two bulbs connected in parallel with each other, and contains an ammeter that measures the total current in the two bulbs?

A

B

C

D

What happens to the resistance when more resistors are added in parallel?

Stays the Same

Increases

Does Not Affect

Decreases

What happens to the total resistance of a circuit if resistors are connected in a series?

Decreases

Stays the same

Goes to zero

Increases

What happens to the total resistance in a parallel circuit when a new resistor is added?

It remains the same

It increases

It depends on the value of the new resistor

It decreases

What is the potential difference across a 4 ohm resistor with a current of 0,5 A?

2,5 V

2 V

8 V

0,125 V

What is the total resistance in this circuit?

10 Ω

5 Ω

25 Ω

6 Ω

Which of the following describes emf?

The flow of electric charge through a circuit

The voltage produced by a source of electrical energy

The resistance of an electrical circuit

The ability of a material to conduct electricity

12 V

1,5 V

15 V

9 V

8 V

What are resistors in series best described as?

Parallel voltage sources

Voltage dividers

Short circuits

Current amplifiers

When resistors are connected in parallel, they act as:

voltage multipliers

current dividers

energy converters

frequency regulators

What is the property of an ohmic conductor?

Varied resistance

Constant resistance

Good insulation

Superconductivity

What unit is used to measure work done by electricity?

Watt

Ampere

Joule

Volt

What is the voltmeter reading over the 12 Ω resistor?

4 V

6,25 V

0,16 V

1,92 V

0,33 V

What is the effective resistance of the two resistors in parallel?

3,53 Ω

0,28 Ω

7 Ω

17 Ω

What is the current in the 12 Ω resistor?

0,80 A

1,0 A

0,33 A

1,92 A

A student investigates how the current in resistor R varies with the voltage across it.
Which circuit does the student use? 

A

B

C

D

What is the resistance of the light bulb?

36 Ω

0,1 Ω

10 Ω

3,6 Ω

Which statement is correct?

The total resistance of the parallel circuit is 6,0 Ω 

The total resistance of the series circuit is 3,0 Ω

In the parallel circuit, the reading on ammeter P is less than the reading on either of the other two ammeters

In the series circuit, the readings on the ammeters are the same

Which symbol represents a fuse?

A

B

C

D