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Worksheets

Y8 Current

Total questions: 18

Worksheet time: 14mins

Name
Class
Date
1.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
2.
This circuit does not work because…
a)
the bulbs are not connected properly
b)
the single cell is not powerful enough
c)
there is a break in the circuit
d)
there is a short crcuit
3.

In a series circuit...

a)

the current is the same everywhere.

b)

the current is split between components.

c)

the voltage is the same everywhere.

d)

the voltage is split between components.

4.

What is the missing value on the ammeter?

(a)  

5.

This picture shows a (a)   circuit.

6.

In the circuit shown, ammeter 2 reads 2.0 A. What does ammeter 1 read? Include the unit symbol A in your answer. Give your answer to 2 significant figures.

a)

2.0 A

b)

1.0 A

c)

3.0 A

d)

0.5 A

7.

In the circuit shown, ammeters 1 and 2 both read 0.5 A. What does ammeter 3 read?

a)

0.5 A

b)

1.0 A

c)

0.25 A

d)

0.75 A

8.

In the circuit shown, all three ammeters read 0.2 A. If lamp 2 breaks, what will the new reading on ammeter 2 be?

a)

0.0 A

b)

0.2 A

c)

0.4 A

9.

In a parallel circuit, the current leaving the cell (shown on ammeter 1) is equal to the current entering the cell (shown on ammeter 2). If ammeter 1 reads 2.0 A, what does ammeter 2 read?

a)

2.0 A

b)

1.5 A

c)

3.0 A

d)

0.5 A

10.

If ammeters 3 and 4 both read 0.5 A, what does ammeter 1 read?

a)

0.5 A

b)

1.0 A

c)

0.25 A

d)

0.75 A

11.

In a parallel circuit, the current splits between the branches. The sum of the currents in each branch is equal to the total current leaving the cell. If ammeters 1 and 2 both read 2.0 A, and ammeter 3 reads 1.0 A, what does ammeter 4 read?

a)

1.0 A

b)

2.0 A

c)

3.0 A

d)

4.0 A

12.

If lamp 1 breaks, what will the new reading on ammeter 4 be?

a)

0.0 A

b)

1.0 A

c)

2.0 A

13.
Question Image

Order these circuits by the size of their current, from smallest to largest. Assume all of the lamps and cells are identical.

a)

A

1.

1

b)

B

2.

3

c)

C

3.

4

d)

D

4.

2

14.

The rate of flow of charge is called...

a)

circuit

b)

load

c)

current

d)

power source

15.
This circuit does not work because…
a)
the bulbs are not connected properly
b)
two cells are not powerful enough
c)
there is a break in the circuit
d)
the cells are facing each other
16.

These resistors are NOT identical.

The current through the cell is 8.0 A.

The current through the top resistor is 3.0 A.

The current through the middle resistor is 1.0 A.

What is the current through the bottom resistor?

a)

0.0 A

b)

1.0 A

c)

3.0 A

d)

4.0 A

17.

These resistors are NOT identical.

The current through the cell is 4.0 A.

The current through the bottom resistor is 3.0 A.

What is the current through the top resistor?

a)

0.0 A

b)

1.0 A

c)

3.0 A

d)

4.0 A

18.

Match the following electrical symbols

a)

1.

Cell

b)

2.

Battery

c)

3.

Light Bulb

d)

4.

Switch

e)

5.

Ammeter