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Kirchhoff's Laws and Circuits

Total questions: 18

Worksheet time: 13mins

Name
Class
Date
1.

Assume that the voltage of the battery is 9 V and that the three resistors are identical. What is the Voltage drop across each resistor?

a)

12 V

b)

0 V

c)

3 V

d)

4 V

2.

In the circuit below, what is the voltage drop across R1?

a)

12 V

b)

6 V

c)

8 V

d)

4 V

3.

What is the current through R1?

a)

10 A

b)

5 A

c)

7 A

d)

2 A

4.

Points P and Q are connected to a battery of fixed voltage. As more resistors R are added to the parallel circuit, what happens to the total current in the circuit?

a)

increases

b)

remains the same

c)

decreases

d)

drops to zero

5.

The lightbulbs in the circuit below are identical with the same resistance R. Which circuit produces more light? (brightness ÜÞ power)

a)

circuit 1

b)

circuit 2

c)

both the same

d)

it depends on R

6.

What happens to the voltage across the resistor R1 when the switch is closed? The voltage will:

a)

increases

b)

decreases

c)

remains the same

7.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
8.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
9.
The total resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
10.
The total current through this circuit is
a)
0.02 amps
b)
0.09 amps
c)
50 amps
d)
9 amps
11.
The voltage dropped across the 300 ohm resistor is 
a)
6 V
b)
9 V
c)
2 V
d)
30 V
12.
What is the total resistance (RT) across this circuit?
a)
3 kΩ
b)
10 kΩ
c)
13 kΩ
d)

18 kΩ

13.
In a parallel circuit which of the following is the same value throughout the circuit?
a)
Voltage
b)
Current
c)
Resistance
d)
Charge
14.
The current going through the 45 ohm resistor is 
a)
0.05 amps
b)
0.2 amps
c)
0.1 amps
d)
5 amps
15.
The total resistance of this circuit is 
a)
25.7 ohms
b)
315 ohms
c)
324 ohms
d)
90 ohms
16.
The total current going through the battery of this circuit is
a)
0.35 amps
b)
0.0286 amps
c)
0 amps
d)
9 amps
17.
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.
18.

The symbol represents a ________________ and the long side represents the ________________ side.

a)

cell, positive

b)

cell, negative

c)

battery, positive

d)

battery, negative