Free Printable Electric Current and Direct Current Circuit

1.

1 Ampere of current is defined as ......

a)

one coulomb of current passing through the surface area in one second.

b)

one coulomb of charge passing through the conductor in one second

c)

one coulomb of charge passing through the surface area in one second

d)

one coulomb of current passing through the conductor in one second.

2.

What type of quantity does the current belongs to?

a)

a base and vector quantities

b)

a base and scalar quantities

c)

a derived and vector quantities

d)

a derived and scalar quantities

3.

From the equation, we know that the resistance of a conductor depends on ?

a)

length of conductor

b)

cross-sectional area

c)

type of material

d)

volume of the wire

4.

State Ohm's Law.

a)

the potential difference across a metallic conductor is proportional to the resistance flowing through it if its temperature is constant.

b)

the resistance across a metallic conductor is proportional to the current flowing through it if its temperature is constant.

c)

the potential difference across a metallic conductor is proportional to the current flowing through it if its temperature is constant.

d)

the current across a metallic conductor is proportional to the potential difference flowing through it if its temperature is constant.

5.

Which equation defines Ohm's Law?

a)

V=IV

b)

R=VI

c)

I=VR

d)

V=IR

6.

$A\ :\ R_E=R_1+R_2+R_3$ and $B\ :\ \frac{1}{R_E}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}$ are two equations that will be apply to calculate the effective capacitance. Which of the following is correctly paired to the arrangement of resistors?

a)

A : Series & B : parallel

b)

A : Parallel & B : Series

7.

Kirchhoff's 1st law is

a)

$\Sigma\ I_{in\ }=\Sigma\ I_{out\ }$

b)

$\Sigma\ V_{in\ }=\Sigma\ V_{out\ }$

c)

$\Sigma\ V\ =0$

d)

$\Sigma\ V=\Sigma\ IR\$

8.

Kirchhoff's 2nd law is

a)

$\Sigma\ I_{in\ }=\Sigma\ I_{out\ }$

b)

$\Sigma\ V_{in\ }=\Sigma\ V_{out\ }$

c)

$\Sigma\ V\ =0$

9.

Which of the statement are true for electrical power?

a)

the energy liberated per unit time in the electrical device

b)

the energy liberated in electrical device

c)

unit Watt (W)

d)

a scalar quantity

e)

a vector quantity

10.

What is the total resistance across this circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

11.

Which resistor will prevent the most current flow?

a)

1 Ω

b)

100 Ω

c)

1000 Ω

d)

0.5 Ω

12.

How does resistance affect current?

a)

less resistance - less current

b)

more resistance - less current

c)

more resistance - more current

d)

resistance does not affect current

13.

The total resistance in this circuit is

a)

100 Ω

b)

450 Ω

c)

400 Ω

d)

30 Ω

14.

in which circuit is the lamp brightest

a)

1

b)

2

c)

3

d)

All the same

15.

As the length of a wire increases, the resistance of the wire will

a)

increase

b)

decrease

c)

stay the same

16.

Which wire would have greater resistance?

a)

The Blue Wire

b)

The Red Wire

c)

They would have equal resistance

17.

Internal resistance increases when temperature increases.

a)

true

b)

false

18.

What is the total resistance of this circuit?

a)

200 Ω

b)

100 Ω

c)

0.063 Ω

d)

15.8 Ω

19.

Find the total resistance of the circuit.

a)

0.068 Ω

b)

14.6 Ω

c)

400 Ω

d)

200 Ω

20.

What is the total resistance of this circuit?

a)

0.012 Ω

b)

85.9 Ω

c)

400 Ω

d)

150 Ω

21.

What is the total resistance of this circuit?

a)

0.18 Ω

b)

5.45 Ω

c)

60 Ω

d)

6000 Ω

22.

which statements are true for emf?

a)

is stand for electromotive force

b)

the power by the battery

c)

the energy by the power source

d)

the work done by in bringing a unit of test charge

23.

Internal resistance is

a)

resistance because of the chemical inside the battery

b)

resistance due to the wire in the circuit

c)

resistance due to back emf

d)

resistance due to material of the wire used in the circuit

24.

The following is the true sequence for the effect of increase in temperature on resistance EXCEPT

a)

the number of free electrons per unit volume in metal unchanged

b)

atoms vibrate faster

c)

free electrons collide with atoms rapidly

d)

resistance decrease

25.

How do feel about this chapter?

a)

easy peasy

b)

intermediate

c)

hard

d)

dead hard (really tough)

Electric Current and Direct Current Circuit

Total questions: 25

Worksheet time: 16mins

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