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Worksheets

DC Circuits

Total questions: 26

Worksheet time: 21mins

Name
Class
Date
1.

What is the unit used for voltage?

a)

Ampere

b)

Ohm

c)

Volt

d)

Meter

2.

Conventionally, current is described as flowing from the ................ terminal of a battery to the ................ terminal.

a)

Negative.....negative

b)

Negative....positive

c)

Positive......negative

d)

Positive....positive

3.

SI unit of current is

a)

ampere

b)

metre

c)

ohm

d)

volt

4.
If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?
a)
5 V
b)
12 V
c)
0.2 V
d)
20 V
5.

What unit is used to measure resistance?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

6.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

7.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
8.

What is the formula for ohms law?

a)

1+2=3

b)

R X E = I

c)

V =I x R

d)

E= MC squared

9.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
10.
What is this symbol?
a)
resistor
b)
switch
c)
battery
d)
bulb
11.

Kirchhoff's current law is applicable to only

a)

Junction in a network

b)

Closed loops in a network

c)

Electric circuits

d)

Electronic circuits

12.

Kirchhoff's current law states that

a)

Net current flow at the junction is positive

b)

Algebraic sum of the currents meeting at the junction is zero

c)

No current can leave the junction without some current entering it

d)

Total sum of currents meeting at the junction is zero

13.

KVL is applied in ___________

a)

Mesh analysis

b)

Nodal analysis

c)

Both mesh and nodal

d)

Neither mesh nor nodal

14.

KCL is applied on

a)

Mesh analysis

b)

Nodal analysis

c)

Both mesh and nodal

d)

Neither mesh nor nodal

15.

Combined resistance of 5 Ω and 10 Ω are connected in series is equal to

a)

10 Ω

b)

15 Ω

c)

20 Ω

d)

25 Ω

16.

Two 10 Ω resistors are connected in parallel, their equivalent resistance is

a)

5 Ω

b)

10 Ω

c)

15 Ω

d)

0.5 Ω

17.

In superposition theorem, when we consider the effect of one voltage source, all the other voltage sources are

a)

Shorted

b)

Opened

c)

Removed

d)

Undisturbed

18.

In superposition theorem, when we consider the effect of one voltage source, all the other current sources are ____________

a)

Shorted

b)

Opened

c)

Removed

d)

Undisturbed

19.

While calculating Rth in thevenin's and norton's theorem

a)

all independent sources are made dead

b)

only current sources are made dead

c)

only voltage sources are made dead

d)

all voltage and current sources are made dead

20.
First Steps to Determine Node Voltages is?
a)
Select a node as the reference node
b)
Apply KCL to each of the n-1 nonreference nodes
c)
Solve the resulting simultaneous equations to<br />obtain the unknown node voltages
d)
Select Mesh
e)
Apply KVL
21.

What is the total resistance in the circuit?

a)

10 ohms

b)

6 ohms

c)

4 ohms

d)

2.4 ohms

22.

Is this quiz easy?

a)

Yes

b)

No

23.

What is the rule for voltage in a Parallel Circuit

a)

Voltage adds

b)

Voltage Divides

c)

Voltage Stays the same

d)

Voltage Multiplies

24.

The picture shows an electrical circuit. This circuit is a series circuit because:

a)

It has 3 light bulbs.

b)

The same current flows through all three light bulbs.

c)

It uses a single battery.

d)

The electrical current is divided between the three light bulbs.

25.

What potential difference is required across an 8.0-Ω resistor to cause 2.0 A to flow through it?

a)

4.0 V

b)

16 V

c)

8.0 V

d)

32 V

26.

Thevenin resistance is found by ________

a)

Shorting all voltage sources

b)

Opening all current sources

c)

Shorting all voltage sources and opening all current source

d)

Opening all voltage sources and shorting all current sources